Upstream the clipboard implementation for Android

ui/base/clipboard/clipboard.h

Index: ui/base/clipboard/clipboard.h
diff --git a/ui/base/clipboard/clipboard.h b/ui/base/clipboard/clipboard.h
index 4dc7a380557640a94b1d6cf426d6712104a1987a..34000e15153f50892c2dc93c8f36d48fe028738e 100644
--- a/ui/base/clipboard/clipboard.h
+++ b/ui/base/clipboard/clipboard.h
@@ -20,6 +20,11 @@
 #include <gdk/gdk.h>
 #endif
 
+#if defined(OS_ANDROID)
+#include "base/synchronization/lock.h"
+#include <jni.h>
+#endif
+
 namespace gfx {
 class Size;
 }
@@ -70,6 +75,9 @@ class UI_EXPORT Clipboard {
     explicit FormatType(const std::string& native_format);
     const std::string& ToString() const { return data_; }
     std::string data_;
+#if defined(OS_ANDROID)
+    int compare(const std::string& str) const { return data_.compare(str); }

[dcheng, 2012/01/19 18:10:17]

I think your cleanup ate a few lines.

[John Grabowski, 2012/01/19 20:32:56]

Verified this doesn't compile; we only hit this conditional when USE_AURA is
defined, which isn't true on OS_ANDROID.

[Peter Beverloo, 2012/01/20 15:13:51]

Good catch. I actually meant to add OS_ANDROID to the conditional on l74 as
well, as the interface (except for the compare() method) is shared.

[Peter Beverloo, 2012/01/20 15:13:51]

As noted, cleanup fail on my side. PS4 compiles and works well (will request
trybots as well).

+#endif
 #elif defined(TOOLKIT_USES_GTK)
     explicit FormatType(const std::string& native_format);
     explicit FormatType(const GdkAtom& native_format);
@@ -165,7 +173,8 @@ class UI_EXPORT Clipboard {
 
   // On Linux/BSD, we need to know when the clipboard is set to a URL.  Most
   // platforms don't care.
-#if defined(OS_WIN) || defined(OS_MACOSX) || defined(USE_AURA)
+#if defined(OS_WIN) || defined(OS_MACOSX) || defined(USE_AURA) \
+    || defined(OS_ANDROID)
   void DidWriteURL(const std::string& utf8_text) {}
 #else  // !defined(OS_WIN) && !defined(OS_MACOSX)
   void DidWriteURL(const std::string& utf8_text);
@@ -322,6 +331,33 @@ class UI_EXPORT Clipboard {
   GtkClipboard* clipboard_;
   GtkClipboard* primary_selection_;
 #endif
+#if defined(OS_ANDROID)
+  FRIEND_TEST_ALL_PREFIXES(ClipboardTest, InternalClipboardInvalidation);
+
+  // Java class and methods for the Android ClipboardManager
+  jobject clipboard_manager_;
+  jmethodID set_text_;
+  jmethodID has_text_;
+  jmethodID get_text_;
+  jmethodID to_string_;
+
+  // Returns whether some text is available from the Android Clipboard
+  bool IsTextAvailableFromAndroid() const;
+
+  // Make sure that the Android Clipboard contents matches what we think it
+  // should contain. If it changed, a copy occured from another application and
+  // all internal data is dropped.
+  void ValidateInternalClipboard() const;
+
+  // Clear the Clipboard for all types. Both for Android and internal
+  void Clear();
+
+  // Clear the internal clipboard
+  void ClearInternalClipboard() const;
+
+  // This private method is used to set non text key/value
+  void Set(const std::string& key, const std::string& value);
+#endif
 
   // MIME type constants.
   static const char kMimeTypeText[];