Clear the clipboard closing Incognito window

ui/base/clipboard/clipboard_win.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.
 
 // Many of these functions are based on those found in
 // webkit/port/platform/PasteboardWin.cpp
 
 #include "ui/base/clipboard/clipboard.h"
 
 #include <shlobj.h>
@@ skipping 190 matching lines @@
 
   clipboard_owner_ = NULL;
 }
 
 Clipboard::~Clipboard() {
   if (clipboard_owner_)
     ::DestroyWindow(clipboard_owner_);
   clipboard_owner_ = NULL;
 }
 
-void Clipboard::WriteObjects(Buffer buffer, const ObjectMap& objects) {
+void Clipboard::WriteObjectsImpl(Buffer buffer,
+                                 const ObjectMap& objects,
+                                 SourceTag tag) {
   DCHECK_EQ(buffer, BUFFER_STANDARD);
 
   ScopedClipboard clipboard;
   if (!clipboard.Acquire(GetClipboardWindow()))
     return;
 
   ::EmptyClipboard();
 
   for (ObjectMap::const_iterator iter = objects.begin();
        iter != objects.end(); ++iter) {
     DispatchObject(static_cast<ObjectType>(iter->first), iter->second);
   }
+  WriteSourceTag(tag);
 }
 
 void Clipboard::WriteText(const char* text_data, size_t text_len) {
   string16 text;
   UTF8ToUTF16(text_data, text_len, &text);
   HGLOBAL glob = CreateGlobalData(text);
 
   WriteToClipboard(CF_UNICODETEXT, glob);
 }
 
@@ skipping 120 matching lines @@
   HGLOBAL hdata = ::GlobalAlloc(GMEM_MOVEABLE, data_len);
   if (!hdata)
     return;
 
   char* data = static_cast<char*>(::GlobalLock(hdata));
   memcpy(data, data_data, data_len);
   ::GlobalUnlock(data);
   WriteToClipboard(format.ToUINT(), hdata);
 }
 
+void Clipboard::WriteSourceTag(SourceTag tag) {
+  if (tag != SourceTag()) {
+    ObjectMapParam binary = SourceTag2Binary(tag);
+    WriteData(GetSourceTagFormatType(), &binary[0], binary.size());
+  }
+}
+
 void Clipboard::WriteToClipboard(unsigned int format, HANDLE handle) {
   DCHECK(clipboard_owner_);
   if (handle && !::SetClipboardData(format, handle)) {
     DCHECK(ERROR_CLIPBOARD_NOT_OPEN != GetLastError());
     FreeData(format, handle);
   }
 }
 
 uint64 Clipboard::GetSequenceNumber(Buffer buffer) {
   DCHECK_EQ(buffer, BUFFER_STANDARD);
@@ skipping 275 matching lines @@
 
   HANDLE data = ::GetClipboardData(format.ToUINT());
   if (!data)
     return;
 
   result->assign(static_cast<const char*>(::GlobalLock(data)),
                  ::GlobalSize(data));
   ::GlobalUnlock(data);
 }
 
+Clipboard::SourceTag Clipboard::ReadSourceTag(Buffer buffer) const {
+  DCHECK_EQ(buffer, BUFFER_STANDARD);
+  std::string result;
+  ReadData(GetSourceTagFormatType(), &result);
+  return Binary2SourceTag(result);
+}
+
 // static
 void Clipboard::ParseBookmarkClipboardFormat(const string16& bookmark,
                                              string16* title,
                                              std::string* url) {
   const string16 kDelim = ASCIIToUTF16("\r\n");
 
   const size_t title_end = bookmark.find_first_of(kDelim);
   if (title)
     title->assign(bookmark.substr(0, title_end));
 
@@ skipping 159 matching lines @@
 // static
 const Clipboard::FormatType& Clipboard::GetPepperCustomDataFormatType() {
   CR_DEFINE_STATIC_LOCAL(
       FormatType,
       type,
       (ClipboardUtil::GetPepperCustomDataFormat()->cfFormat));
   return type;
 }
 
 // static
+const Clipboard::FormatType& Clipboard::GetSourceTagFormatType() {
+  CR_DEFINE_STATIC_LOCAL(
+      FormatType,
+      type,
+      (ClipboardUtil::GetSourceTagFormat()->cfFormat));
+  return type;
+}
+
+// static
 void Clipboard::FreeData(unsigned int format, HANDLE data) {
   if (format == CF_BITMAP)
     ::DeleteObject(static_cast<HBITMAP>(data));
   else
     ::GlobalFree(data);
 }
 
 HWND Clipboard::GetClipboardWindow() const {
   if (!clipboard_owner_ && create_window_) {
     clipboard_owner_ = ::CreateWindow(L"ClipboardOwnerWindowClass",
                                       L"ClipboardOwnerWindow",
                                       0, 0, 0, 0, 0,
                                       HWND_MESSAGE,
                                       0, 0, 0);
   }
   return clipboard_owner_;
 }
 
 }  // namespace ui