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

content/renderer/renderer_clipboard_client.cc

Index: content/renderer/renderer_clipboard_client.cc
diff --git a/content/renderer/renderer_clipboard_client.cc b/content/renderer/renderer_clipboard_client.cc
index 9c0a30fe27eb8b18e0ca66605a68c7739400398f..82dd4faa1b9f859c26c0ca4d696be55470c5da9b 100644
--- a/content/renderer/renderer_clipboard_client.cc
+++ b/content/renderer/renderer_clipboard_client.cc
@@ -178,6 +178,12 @@ void RendererClipboardClient::ReadCustomData(ui::Clipboard::Buffer buffer,
       new ClipboardHostMsg_ReadCustomData(buffer, type, data));
 }
 
+void RendererClipboardClient::ReadData(const ui::Clipboard::FormatType& format,
+                                       std::string* data) {
+  RenderThreadImpl::current()->Send(
+      new ClipboardHostMsg_ReadData(format, data));
+}
+
 webkit_glue::ClipboardClient::WriteContext*
 RendererClipboardClient::CreateWriteContext() {
   return new RendererClipboardWriteContext;