Change how ui::Clipboard is accessed so there's only one per thread.

ui/base/clipboard/clipboard_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "build/build_config.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/message_loop.h"
 #include "base/pickle.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/base/clipboard/scoped_clipboard_writer.h"
 #include "ui/gfx/size.h"
 
 #if defined(OS_WIN)
-#include "base/message_loop.h"
 #include "ui/base/clipboard/clipboard_util_win.h"
 #endif
 
 #if defined(OS_ANDROID)
 #include "base/android/jni_android.h"
 #endif
 
 namespace ui {
 
-#if defined(OS_WIN)
 class ClipboardTest : public PlatformTest {
  protected:
   virtual void SetUp() {
     message_loop_.reset(new MessageLoopForUI());
   }
   virtual void TearDown() {
   }
 
+  Clipboard& clipboard() { return clipboard_; }
+
  private:
   scoped_ptr<MessageLoop> message_loop_;
+  Clipboard clipboard_;
 };
-#elif defined(OS_POSIX)
-typedef PlatformTest ClipboardTest;
-#endif  // defined(OS_WIN)
 
 namespace {
 
 bool MarkupMatches(const string16& expected_markup,
                    const string16& actual_markup) {
   return actual_markup.find(expected_markup) != string16::npos;
 }
 
 }  // namespace
 
 TEST_F(ClipboardTest, ClearTest) {
-  Clipboard clipboard;
-
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteText(ASCIIToUTF16("clear me"));
   }
 
-  clipboard.Clear(Clipboard::BUFFER_STANDARD);
+  clipboard().Clear(Clipboard::BUFFER_STANDARD);
 
-  EXPECT_FALSE(clipboard.IsFormatAvailable(
+  EXPECT_FALSE(clipboard().IsFormatAvailable(
       Clipboard::GetPlainTextWFormatType(), Clipboard::BUFFER_STANDARD));
-  EXPECT_FALSE(clipboard.IsFormatAvailable(
+  EXPECT_FALSE(clipboard().IsFormatAvailable(
       Clipboard::GetPlainTextFormatType(), Clipboard::BUFFER_STANDARD));
 }
 
 TEST_F(ClipboardTest, TextTest) {
-  Clipboard clipboard;
-
   string16 text(ASCIIToUTF16("This is a string16!#$")), text_result;
   std::string ascii_text;
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteText(text);
   }
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(
+  EXPECT_TRUE(clipboard().IsFormatAvailable(
       Clipboard::GetPlainTextWFormatType(), Clipboard::BUFFER_STANDARD));
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetPlainTextFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
-  clipboard.ReadText(Clipboard::BUFFER_STANDARD, &text_result);
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetPlainTextFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
+  clipboard().ReadText(Clipboard::BUFFER_STANDARD, &text_result);
 
   EXPECT_EQ(text, text_result);
-  clipboard.ReadAsciiText(Clipboard::BUFFER_STANDARD, &ascii_text);
+  clipboard().ReadAsciiText(Clipboard::BUFFER_STANDARD, &ascii_text);
   EXPECT_EQ(UTF16ToUTF8(text), ascii_text);
 }
 
 TEST_F(ClipboardTest, HTMLTest) {
-  Clipboard clipboard;
-
   string16 markup(ASCIIToUTF16("<string>Hi!</string>")), markup_result;
   std::string url("http://www.example.com/"), url_result;
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteHTML(markup, url);
   }
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetHtmlFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetHtmlFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
   uint32 ignored;
-  clipboard.ReadHTML(Clipboard::BUFFER_STANDARD, &markup_result, &url_result,
+  clipboard().ReadHTML(Clipboard::BUFFER_STANDARD, &markup_result, &url_result,
                      &ignored, &ignored);
   EXPECT_PRED2(MarkupMatches, markup, markup_result);
 #if defined(OS_WIN)
   // TODO(playmobil): It's not clear that non windows clipboards need to support
   // this.
   EXPECT_EQ(url, url_result);
 #endif  // defined(OS_WIN)
 }
 
 TEST_F(ClipboardTest, RTFTest) {
-  Clipboard clipboard;
-
   std::string rtf =
       "{\\rtf1\\ansi{\\fonttbl\\f0\\fswiss Helvetica;}\\f0\\pard\n"
       "This is some {\\b bold} text.\\par\n"
       "}";
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteRTF(rtf);
   }
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetRtfFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetRtfFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
   std::string result;
-  clipboard.ReadRTF(Clipboard::BUFFER_STANDARD, &result);
+  clipboard().ReadRTF(Clipboard::BUFFER_STANDARD, &result);
   EXPECT_EQ(rtf, result);
 }
 
 #if defined(TOOLKIT_GTK)
 TEST_F(ClipboardTest, MultipleBufferTest) {
-  Clipboard clipboard;
-
   string16 text(ASCIIToUTF16("Standard")), text_result;
   string16 markup(ASCIIToUTF16("<string>Selection</string>")), markup_result;
   std::string url("http://www.example.com/"), url_result;
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteText(text);
   }
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_SELECTION);
     clipboard_writer.WriteHTML(markup, url);
   }
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetPlainTextFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
-  EXPECT_FALSE(clipboard.IsFormatAvailable(Clipboard::GetPlainTextFormatType(),
-                                           Clipboard::BUFFER_SELECTION));
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetPlainTextFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
+  EXPECT_FALSE(clipboard().IsFormatAvailable(
+      Clipboard::GetPlainTextFormatType(),
+      Clipboard::BUFFER_SELECTION));
 
-  EXPECT_FALSE(clipboard.IsFormatAvailable(Clipboard::GetHtmlFormatType(),
-                                           Clipboard::BUFFER_STANDARD));
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetHtmlFormatType(),
-                                          Clipboard::BUFFER_SELECTION));
+  EXPECT_FALSE(clipboard().IsFormatAvailable(Clipboard::GetHtmlFormatType(),
+                                             Clipboard::BUFFER_STANDARD));
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetHtmlFormatType(),
+                                            Clipboard::BUFFER_SELECTION));
 
-  clipboard.ReadText(Clipboard::BUFFER_STANDARD, &text_result);
+  clipboard().ReadText(Clipboard::BUFFER_STANDARD, &text_result);
   EXPECT_EQ(text, text_result);
 
   uint32 ignored;
-  clipboard.ReadHTML(Clipboard::BUFFER_SELECTION, &markup_result, &url_result,
-                     &ignored, &ignored);
+  clipboard().ReadHTML(Clipboard::BUFFER_SELECTION, &markup_result, &url_result,
+                       &ignored, &ignored);
   EXPECT_PRED2(MarkupMatches, markup, markup_result);
 }
 #endif
 
 TEST_F(ClipboardTest, TrickyHTMLTest) {
-  Clipboard clipboard;
-
   string16 markup(ASCIIToUTF16("<em>Bye!<!--EndFragment --></em>")),
       markup_result;
   std::string url, url_result;
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteHTML(markup, url);
   }
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetHtmlFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetHtmlFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
   uint32 ignored;
-  clipboard.ReadHTML(Clipboard::BUFFER_STANDARD, &markup_result, &url_result,
-                     &ignored, &ignored);
+  clipboard().ReadHTML(Clipboard::BUFFER_STANDARD, &markup_result, &url_result,
+                       &ignored, &ignored);
   EXPECT_PRED2(MarkupMatches, markup, markup_result);
 #if defined(OS_WIN)
   // TODO(playmobil): It's not clear that non windows clipboards need to support
   // this.
   EXPECT_EQ(url, url_result);
 #endif  // defined(OS_WIN)
 }
 
 #if defined(OS_WIN)
 TEST_F(ClipboardTest, UniodeHTMLTest) {
-  Clipboard clipboard;
-
   string16 markup(UTF8ToUTF16("<div>A \xc3\xb8 \xe6\xb0\xb4</div>")),
       markup_result;
   std::string url, url_result;
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteHTML(markup, url);
   }
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetHtmlFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetHtmlFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
   uint32 fragment_start;
   uint32 fragment_end;
-  clipboard.ReadHTML(Clipboard::BUFFER_STANDARD, &markup_result, &url_result,
-                     &fragment_start, &fragment_end);
+  clipboard().ReadHTML(Clipboard::BUFFER_STANDARD, &markup_result, &url_result,
+                       &fragment_start, &fragment_end);
   EXPECT_PRED2(MarkupMatches, markup, markup_result);
   EXPECT_EQ(url, url_result);
   // Make sure that fragment indices were adjusted when converting.
   EXPECT_EQ(36, fragment_start);
   EXPECT_EQ(52, fragment_end);
 }
 #endif  // defined(OS_WIN)
 
 #if defined(TOOLKIT_GTK)
 // Regression test for crbug.com/56298 (pasting empty HTML crashes Linux).
 TEST_F(ClipboardTest, EmptyHTMLTest) {
-  Clipboard clipboard;
   // ScopedClipboardWriter doesn't let us write empty data to the clipboard.
-  clipboard.clipboard_data_ = new Clipboard::TargetMap();
+  clipboard().clipboard_data_ = new Clipboard::TargetMap();
   // The 1 is so the compiler doesn't warn about allocating an empty array.
   char* empty = new char[1];
-  clipboard.InsertMapping("text/html", empty, 0U);
-  clipboard.SetGtkClipboard(Clipboard::BUFFER_STANDARD);
+  clipboard().InsertMapping("text/html", empty, 0U);
+  clipboard().SetGtkClipboard(Clipboard::BUFFER_STANDARD);
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetHtmlFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetHtmlFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
   string16 markup_result;
   std::string url_result;
   uint32 ignored;
-  clipboard.ReadHTML(Clipboard::BUFFER_STANDARD, &markup_result, &url_result,
-                     &ignored, &ignored);
+  clipboard().ReadHTML(Clipboard::BUFFER_STANDARD, &markup_result, &url_result,
+                       &ignored, &ignored);
   EXPECT_PRED2(MarkupMatches, string16(), markup_result);
 }
 #endif
 
 // TODO(estade): Port the following test (decide what target we use for urls)
 #if !defined(OS_POSIX) || defined(OS_MACOSX)
 TEST_F(ClipboardTest, BookmarkTest) {
-  Clipboard clipboard;
-
   string16 title(ASCIIToUTF16("The Example Company")), title_result;
   std::string url("http://www.example.com/"), url_result;
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteBookmark(title, url);
   }
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetUrlWFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
-  clipboard.ReadBookmark(&title_result, &url_result);
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetUrlWFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
+  clipboard().ReadBookmark(&title_result, &url_result);
   EXPECT_EQ(title, title_result);
   EXPECT_EQ(url, url_result);
 }
 #endif  // defined(OS_WIN)
 
 TEST_F(ClipboardTest, MultiFormatTest) {
-  Clipboard clipboard;
-
   string16 text(ASCIIToUTF16("Hi!")), text_result;
   string16 markup(ASCIIToUTF16("<strong>Hi!</string>")), markup_result;
   std::string url("http://www.example.com/"), url_result;
   std::string ascii_text;
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteHTML(markup, url);
     clipboard_writer.WriteText(text);
   }
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetHtmlFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
-  EXPECT_TRUE(clipboard.IsFormatAvailable(
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetHtmlFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
+  EXPECT_TRUE(clipboard().IsFormatAvailable(
       Clipboard::GetPlainTextWFormatType(), Clipboard::BUFFER_STANDARD));
-  EXPECT_TRUE(clipboard.IsFormatAvailable(
+  EXPECT_TRUE(clipboard().IsFormatAvailable(
       Clipboard::GetPlainTextFormatType(), Clipboard::BUFFER_STANDARD));
   uint32 ignored;
-  clipboard.ReadHTML(Clipboard::BUFFER_STANDARD, &markup_result, &url_result,
-                     &ignored, &ignored);
+  clipboard().ReadHTML(Clipboard::BUFFER_STANDARD, &markup_result, &url_result,
+                       &ignored, &ignored);
   EXPECT_PRED2(MarkupMatches, markup, markup_result);
 #if defined(OS_WIN)
   // TODO(playmobil): It's not clear that non windows clipboards need to support
   // this.
   EXPECT_EQ(url, url_result);
 #endif  // defined(OS_WIN)
-  clipboard.ReadText(Clipboard::BUFFER_STANDARD, &text_result);
+  clipboard().ReadText(Clipboard::BUFFER_STANDARD, &text_result);
   EXPECT_EQ(text, text_result);
-  clipboard.ReadAsciiText(Clipboard::BUFFER_STANDARD, &ascii_text);
+  clipboard().ReadAsciiText(Clipboard::BUFFER_STANDARD, &ascii_text);
   EXPECT_EQ(UTF16ToUTF8(text), ascii_text);
 }
 
 TEST_F(ClipboardTest, URLTest) {
-  Clipboard clipboard;
-
   string16 url(ASCIIToUTF16("http://www.google.com/"));
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteURL(url);
   }
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(
+  EXPECT_TRUE(clipboard().IsFormatAvailable(
       Clipboard::GetPlainTextWFormatType(), Clipboard::BUFFER_STANDARD));
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetPlainTextFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetPlainTextFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
   string16 text_result;
-  clipboard.ReadText(Clipboard::BUFFER_STANDARD, &text_result);
+  clipboard().ReadText(Clipboard::BUFFER_STANDARD, &text_result);
 
   EXPECT_EQ(text_result, url);
 
   std::string ascii_text;
-  clipboard.ReadAsciiText(Clipboard::BUFFER_STANDARD, &ascii_text);
+  clipboard().ReadAsciiText(Clipboard::BUFFER_STANDARD, &ascii_text);
   EXPECT_EQ(UTF16ToUTF8(url), ascii_text);
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
   ascii_text.clear();
-  clipboard.ReadAsciiText(Clipboard::BUFFER_SELECTION, &ascii_text);
+  clipboard().ReadAsciiText(Clipboard::BUFFER_SELECTION, &ascii_text);
   EXPECT_EQ(UTF16ToUTF8(url), ascii_text);
 #endif
 }
 
 TEST_F(ClipboardTest, SharedBitmapTest) {
   unsigned int fake_bitmap[] = {
     0x46155189, 0xF6A55C8D, 0x79845674, 0xFA57BD89,
     0x78FD46AE, 0x87C64F5A, 0x36EDC5AF, 0x4378F568,
     0x91E9F63A, 0xC31EA14F, 0x69AB32DF, 0x643A3FD1,
   };
   gfx::Size fake_bitmap_size(3, 4);
   uint32 bytes = sizeof(fake_bitmap);
 
   // Create shared memory region.
   base::SharedMemory shared_buf;
   ASSERT_TRUE(shared_buf.CreateAndMapAnonymous(bytes));
   memcpy(shared_buf.memory(), fake_bitmap, bytes);
   base::SharedMemoryHandle handle_to_share;
   base::ProcessHandle current_process = base::kNullProcessHandle;
 #if defined(OS_WIN)
   current_process = GetCurrentProcess();
 #endif
   shared_buf.ShareToProcess(current_process, &handle_to_share);
   ASSERT_TRUE(shared_buf.Unmap());
 
-  // Setup data for clipboard.
+  // Setup data for clipboard().
   Clipboard::ObjectMapParam placeholder_param;
   Clipboard::ObjectMapParam size_param;
   const char* size_data = reinterpret_cast<const char*>(&fake_bitmap_size);
   for (size_t i = 0; i < sizeof(fake_bitmap_size); ++i)
     size_param.push_back(size_data[i]);
 
   Clipboard::ObjectMapParams params;
   params.push_back(placeholder_param);
   params.push_back(size_param);
 
   Clipboard::ObjectMap objects;
   objects[Clipboard::CBF_SMBITMAP] = params;
   Clipboard::ReplaceSharedMemHandle(&objects, handle_to_share, current_process);
 
-  Clipboard clipboard;
-  clipboard.WriteObjects(Clipboard::BUFFER_STANDARD, objects);
+  clipboard().WriteObjects(Clipboard::BUFFER_STANDARD, objects);
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetBitmapFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetBitmapFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
 }
 
 // The following test somehow fails on GTK. The image when read back from the
 // clipboard has the alpha channel set to 0xFF for some reason. The other
 // channels stay intact. So I am turning this on only for aura.
 #if (defined(USE_AURA) && !defined(OS_WIN)) || defined(OS_ANDROID)
 TEST_F(ClipboardTest, MultipleBitmapReadWriteTest) {
-  Clipboard clipboard;
-
   // Test first bitmap
   unsigned int fake_bitmap_1[] = {
     0x46155189, 0xF6A55C8D, 0x79845674, 0xFA57BD89,
     0x78FD46AE, 0x87C64F5A, 0x36EDC5AF, 0x4378F568,
     0x91E9F63A, 0xC31EA14F, 0x69AB32DF, 0x643A3FD1,
   };
   gfx::Size fake_bitmap_1_size(3, 4);
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteBitmapFromPixels(fake_bitmap_1, fake_bitmap_1_size);
   }
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetBitmapFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
-  SkBitmap image_1 = clipboard.ReadImage(Clipboard::BUFFER_STANDARD);
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetBitmapFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
+  SkBitmap image_1 = clipboard().ReadImage(Clipboard::BUFFER_STANDARD);
   EXPECT_EQ(fake_bitmap_1_size, gfx::Size(image_1.width(), image_1.height()));
   unsigned int* pixels_1 = reinterpret_cast<unsigned int*>(image_1.getPixels());
   for (int i = 0; i < fake_bitmap_1_size.width(); ++i) {
     for (int j = 0; j < fake_bitmap_1_size.height(); ++j) {
       int id = i * fake_bitmap_1_size.height() + j;
       EXPECT_EQ(fake_bitmap_1[id], pixels_1[id]);
     }
   }
 
   // Test second bitmap
   unsigned int fake_bitmap_2[] = {
     0x46155189, 0xF6A55C8D,
     0x79845674, 0xFA57BD89,
     0x78FD46AE, 0x87C64F5A,
     0x36EDC5AF, 0x4378F568,
     0x91E9F63A, 0xC31EA14F,
     0x69AB32DF, 0x643A3FD1,
     0xA6DF041D, 0x83046278,
   };
   gfx::Size fake_bitmap_2_size(7, 2);
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteBitmapFromPixels(fake_bitmap_2, fake_bitmap_2_size);
   }
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetBitmapFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
-  SkBitmap image_2 = clipboard.ReadImage(Clipboard::BUFFER_STANDARD);
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetBitmapFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
+  SkBitmap image_2 = clipboard().ReadImage(Clipboard::BUFFER_STANDARD);
   EXPECT_EQ(fake_bitmap_2_size, gfx::Size(image_2.width(), image_2.height()));
   unsigned int* pixels_2 = reinterpret_cast<unsigned int*>(image_2.getPixels());
   for (int i = 0; i < fake_bitmap_2_size.width(); ++i) {
     for (int j = 0; j < fake_bitmap_2_size.height(); ++j) {
       int id = i * fake_bitmap_2_size.height() + j;
       EXPECT_EQ(fake_bitmap_2[id], pixels_2[id]);
     }
   }
 }
 #endif
 
 TEST_F(ClipboardTest, DataTest) {
-  Clipboard clipboard;
   const ui::Clipboard::FormatType kFormat =
       ui::Clipboard::GetFormatType("chromium/x-test-format");
   std::string payload("test string");
   Pickle write_pickle;
   write_pickle.WriteString(payload);
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WritePickledData(write_pickle, kFormat);
   }
 
-  ASSERT_TRUE(clipboard.IsFormatAvailable(
+  ASSERT_TRUE(clipboard().IsFormatAvailable(
       kFormat, Clipboard::BUFFER_STANDARD));
   std::string output;
-  clipboard.ReadData(kFormat, &output);
+  clipboard().ReadData(kFormat, &output);
   ASSERT_FALSE(output.empty());
 
   Pickle read_pickle(output.data(), output.size());
   PickleIterator iter(read_pickle);
   std::string unpickled_string;
   ASSERT_TRUE(read_pickle.ReadString(&iter, &unpickled_string));
   EXPECT_EQ(payload, unpickled_string);
 }
 
 TEST_F(ClipboardTest, MultipleDataTest) {
-  Clipboard clipboard;
   const ui::Clipboard::FormatType kFormat1 =
       ui::Clipboard::GetFormatType("chromium/x-test-format1");
   std::string payload1("test string1");
   Pickle write_pickle1;
   write_pickle1.WriteString(payload1);
 
   const ui::Clipboard::FormatType kFormat2 =
       ui::Clipboard::GetFormatType("chromium/x-test-format2");
   std::string payload2("test string2");
   Pickle write_pickle2;
   write_pickle2.WriteString(payload2);
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WritePickledData(write_pickle1, kFormat1);
     // overwrite the previous pickle for fun
     clipboard_writer.WritePickledData(write_pickle2, kFormat2);
   }
 
-  ASSERT_TRUE(clipboard.IsFormatAvailable(
+  ASSERT_TRUE(clipboard().IsFormatAvailable(
       kFormat2, Clipboard::BUFFER_STANDARD));
 
   // Check string 2.
   std::string output2;
-  clipboard.ReadData(kFormat2, &output2);
+  clipboard().ReadData(kFormat2, &output2);
   ASSERT_FALSE(output2.empty());
 
   Pickle read_pickle2(output2.data(), output2.size());
   PickleIterator iter2(read_pickle2);
   std::string unpickled_string2;
   ASSERT_TRUE(read_pickle2.ReadString(&iter2, &unpickled_string2));
   EXPECT_EQ(payload2, unpickled_string2);
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WritePickledData(write_pickle2, kFormat2);
     // overwrite the previous pickle for fun
     clipboard_writer.WritePickledData(write_pickle1, kFormat1);
   }
 
-  ASSERT_TRUE(clipboard.IsFormatAvailable(
+  ASSERT_TRUE(clipboard().IsFormatAvailable(
       kFormat1, Clipboard::BUFFER_STANDARD));
 
   // Check string 1.
   std::string output1;
-  clipboard.ReadData(kFormat1, &output1);
+  clipboard().ReadData(kFormat1, &output1);
   ASSERT_FALSE(output1.empty());
 
   Pickle read_pickle1(output1.data(), output1.size());
   PickleIterator iter1(read_pickle1);
   std::string unpickled_string1;
   ASSERT_TRUE(read_pickle1.ReadString(&iter1, &unpickled_string1));
   EXPECT_EQ(payload1, unpickled_string1);
 }
 
 #if defined(OS_WIN)  // Windows only tests.
 TEST_F(ClipboardTest, HyperlinkTest) {
-  Clipboard clipboard;
-
   const std::string kTitle("The Example Company");
   const std::string kUrl("http://www.example.com/");
   const std::string kExpectedHtml("<a href=\"http://www.example.com/\">"
                                   "The Example Company</a>");
   std::string url_result;
   string16 html_result;
 
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteHyperlink(ASCIIToUTF16(kTitle), kUrl);
   }
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetHtmlFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetHtmlFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
   uint32 ignored;
-  clipboard.ReadHTML(Clipboard::BUFFER_STANDARD, &html_result, &url_result,
-                     &ignored, &ignored);
+  clipboard().ReadHTML(Clipboard::BUFFER_STANDARD, &html_result, &url_result,
+                       &ignored, &ignored);
   EXPECT_PRED2(MarkupMatches, ASCIIToUTF16(kExpectedHtml), html_result);
 }
 
 TEST_F(ClipboardTest, WebSmartPasteTest) {
-  Clipboard clipboard;
-
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteWebSmartPaste();
   }
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(
+  EXPECT_TRUE(clipboard().IsFormatAvailable(
       Clipboard::GetWebKitSmartPasteFormatType(), Clipboard::BUFFER_STANDARD));
 }
 
 TEST_F(ClipboardTest, BitmapTest) {
   unsigned int fake_bitmap[] = {
     0x46155189, 0xF6A55C8D, 0x79845674, 0xFA57BD89,
     0x78FD46AE, 0x87C64F5A, 0x36EDC5AF, 0x4378F568,
     0x91E9F63A, 0xC31EA14F, 0x69AB32DF, 0x643A3FD1,
   };
 
-  Clipboard clipboard;
-
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteBitmapFromPixels(fake_bitmap, gfx::Size(3, 4));
   }
 
-  EXPECT_TRUE(clipboard.IsFormatAvailable(Clipboard::GetBitmapFormatType(),
-                                          Clipboard::BUFFER_STANDARD));
+  EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetBitmapFormatType(),
+                                            Clipboard::BUFFER_STANDARD));
 }
 
 void HtmlTestHelper(const std::string& cf_html,
                     const std::string& expected_html) {
   std::string html;
   ClipboardUtil::CFHtmlToHtml(cf_html, &html, NULL);
   EXPECT_EQ(html, expected_html);
 }
 
 TEST_F(ClipboardTest, HtmlTest) {
@@ skipping 27 matching lines @@
                  "<body>\r\n"
                  "<p>Foo</p>\r\n"
                  "</body>\r\n"
                  "</html>\r\n\r\n",
                  "<p>Foo</p>");
 }
 #endif  // defined(OS_WIN)
 
 // Test writing all formats we have simultaneously.
 TEST_F(ClipboardTest, WriteEverything) {
-  Clipboard clipboard;
-
   {
-    ScopedClipboardWriter writer(&clipboard, Clipboard::BUFFER_STANDARD);
+    ScopedClipboardWriter writer(&clipboard(), Clipboard::BUFFER_STANDARD);
     writer.WriteText(UTF8ToUTF16("foo"));
     writer.WriteURL(UTF8ToUTF16("foo"));
     writer.WriteHTML(UTF8ToUTF16("foo"), "bar");
     writer.WriteBookmark(UTF8ToUTF16("foo"), "bar");
     writer.WriteHyperlink(ASCIIToUTF16("foo"), "bar");
     writer.WriteWebSmartPaste();
     // Left out: WriteFile, WriteFiles, WriteBitmapFromPixels, WritePickledData.
   }
 
   // Passes if we don't crash.
 }
 
 #if defined(OS_ANDROID)
 
 // Test that if another application writes some text to the pasteboard the
 // clipboard properly invalidates other types.
 TEST_F(ClipboardTest, InternalClipboardInvalidation) {
   const unsigned int kFakeBitmap[] = {
     0x46155189, 0xF6A55C8D, 0x79845674, 0xFA57BD89,
     0x78FD46AE, 0x87C64F5A, 0x36EDC5AF, 0x4378F568,
     0x91E9F63A, 0xC31EA14F, 0x69AB32DF, 0x643A3FD1,
   };
 
-  // Write a bitmap in our clipboard.
-  Clipboard clipboard;
+  // Write a bitmap in our clipboard().
   {
-    ScopedClipboardWriter clipboard_writer(&clipboard,
+    ScopedClipboardWriter clipboard_writer(&clipboard(),
                                            Clipboard::BUFFER_STANDARD);
     clipboard_writer.WriteBitmapFromPixels(kFakeBitmap, gfx::Size(3, 4));
   }
 
   //
   // Simulate that another application copied something in the Clipboard
   //
   std::string new_value("Some text copied by some other app");
   using base::android::ScopedJavaLocalRef;
 
@@ skipping 20 matching lines @@
       base::android::GetClass(env, "android/text/ClipboardManager");
   jmethodID set_text = base::android::GetMethodID(env, clipboard_class,
                           "setText", "(Ljava/lang/CharSequence;)V");
 
   // Will need to call toString as CharSequence is not always a String.
   env->CallVoidMethod(clipboard_manager.obj(),
                       set_text,
                       env->NewStringUTF(new_value.c_str()));
 
   // The bitmap that should have been available should be gone.
-  EXPECT_FALSE(clipboard.IsFormatAvailable(Clipboard::GetBitmapFormatType(),
-                                           Clipboard::BUFFER_STANDARD));
+  EXPECT_FALSE(clipboard().IsFormatAvailable(Clipboard::GetBitmapFormatType(),
+                                             Clipboard::BUFFER_STANDARD));
 
   // Make sure some text is available
-  EXPECT_TRUE(clipboard.IsFormatAvailable(
+  EXPECT_TRUE(clipboard().IsFormatAvailable(
       Clipboard::GetPlainTextWFormatType(), Clipboard::BUFFER_STANDARD));
 
   // Make sure the text is what we inserted while simulating the other app
   std::string contents;
-  clipboard.ReadAsciiText(Clipboard::BUFFER_STANDARD, &contents);
+  clipboard().ReadAsciiText(Clipboard::BUFFER_STANDARD, &contents);
   EXPECT_EQ(contents, new_value);
 }
 #endif
 }  // namespace ui