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

ui/base/clipboard/clipboard_aurax11.cc

Index: ui/base/clipboard/clipboard_aurax11.cc
diff --git a/ui/base/clipboard/clipboard_aurax11.cc b/ui/base/clipboard/clipboard_aurax11.cc
index b37d636a9bae80627881eced330babda3560c039..b8f66702387c509ba7872fd95c5aef4464db64c7 100644
--- a/ui/base/clipboard/clipboard_aurax11.cc
+++ b/ui/base/clipboard/clipboard_aurax11.cc
@@ -36,6 +36,7 @@ const char kClipboard[] = "CLIPBOARD";
 const char kMimeTypeBitmap[] = "image/bmp";
 const char kMimeTypeFilename[] = "chromium/filename";
 const char kMimeTypeMozillaURL[] = "text/x-moz-url";
+const char kMimeTypePepperCustomData[] = "chromium/x-pepper-custom-data";
 const char kMimeTypeWebkitSmartPaste[] = "chromium/x-webkit-paste";
 const char kMultiple[] = "MULTIPLE";
 const char kString[] = "STRING";
@@ -1207,4 +1208,10 @@ const Clipboard::FormatType& Clipboard::GetWebCustomDataFormatType() {
   return type;
 }
 
+// static
+const Clipboard::FormatType& Clipboard::GetPepperCustomDataFormatType() {
+  CR_DEFINE_STATIC_LOCAL(FormatType, type, (kMimeTypePepperCustomData));
+  return type;
+}
+
 }  // namespace ui