Move flash clipboard to the new proxy and add custom format support

ui/base/clipboard/clipboard_gtk.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 "ui/base/clipboard/clipboard.h"
 
 #include <gtk/gtk.h>
 #include <X11/extensions/Xfixes.h>
 #include <X11/Xatom.h>
 #include <map>
@@ skipping 90 matching lines @@
       primary_sequence_number_++;
     } else {
       DLOG(ERROR) << "Unexpected selection atom: " << ev->selection;
     }
   }
   return GDK_FILTER_CONTINUE;
 }
 
 const char kMimeTypeBitmap[] = "image/bmp";
 const char kMimeTypeMozillaURL[] = "text/x-moz-url";
+const char kMimeTypePepperCustomData[] = "chromium/x-pepper-custom-data";
 const char kMimeTypeWebkitSmartPaste[] = "chromium/x-webkit-paste";
 
 std::string GdkAtomToString(const GdkAtom& atom) {
   gchar* name = gdk_atom_name(atom);
   std::string rv(name);
   g_free(name);
   return rv;
 }
 
 GdkAtom StringToGdkAtom(const std::string& str) {
@@ skipping 522 matching lines @@
   CR_DEFINE_STATIC_LOCAL(FormatType, type, (kMimeTypeWebkitSmartPaste));
   return type;
 }
 
 // static
 const Clipboard::FormatType& Clipboard::GetWebCustomDataFormatType() {
   CR_DEFINE_STATIC_LOCAL(FormatType, type, (kMimeTypeWebCustomData));
   return type;
 }
 
+// static
+const Clipboard::FormatType& Clipboard::GetPepperCustomDataFormatType() {
+  CR_DEFINE_STATIC_LOCAL(FormatType, type, (kMimeTypePepperCustomData));
+  return type;
+}
+
 void Clipboard::InsertMapping(const char* key,
                               char* data,
                               size_t data_len) {
   DCHECK(clipboard_data_->find(key) == clipboard_data_->end());
   (*clipboard_data_)[key] = std::make_pair(data, data_len);
 }
 
 GtkClipboard* Clipboard::LookupBackingClipboard(Buffer clipboard) const {
   switch (clipboard) {
     case BUFFER_STANDARD:
       return clipboard_;
     case BUFFER_SELECTION:
       return primary_selection_;
     default:
       NOTREACHED();
       return NULL;
   }
 }
 
 }  // namespace ui