Clear the clipboard closing Incognito window

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"
@@ skipping 342 matching lines @@
     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().WriteObjects(Clipboard::BUFFER_STANDARD, objects);
+  clipboard().WriteObjects(Clipboard::BUFFER_STANDARD,
+                           objects,
+                           Clipboard::SourceTag());
 
   EXPECT_TRUE(clipboard().IsFormatAvailable(Clipboard::GetBitmapFormatType(),
                                             Clipboard::BUFFER_STANDARD));
 }
 #endif
 
 // 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.
 //
@@ skipping 313 matching lines @@
   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);
   EXPECT_EQ(contents, new_value);
 }
 #endif
 }  // namespace ui