add pepper video decoder glue and delegate

chrome/renderer/pepper_plugin_delegate_impl.h

Index: chrome/renderer/pepper_plugin_delegate_impl.h
diff --git a/chrome/renderer/pepper_plugin_delegate_impl.h b/chrome/renderer/pepper_plugin_delegate_impl.h
index 2aa3186a945537e956e9b657b05ba374786db640..47a5f387d5503bba5fd0ca441328f773f7ee45a5 100644
--- a/chrome/renderer/pepper_plugin_delegate_impl.h
+++ b/chrome/renderer/pepper_plugin_delegate_impl.h
@@ -10,6 +10,8 @@
 
 #include "base/basictypes.h"
 #include "base/weak_ptr.h"
+#include "third_party/ppapi/c/pp_errors.h"
+#include "third_party/ppapi/c/pp_video.h"
 #include "webkit/glue/plugins/pepper_plugin_delegate.h"
 #include "webkit/glue/plugins/pepper_plugin_instance.h"
 
@@ -44,6 +46,8 @@ class PepperPluginDelegateImpl
       uint32_t sample_count,
       pepper::PluginDelegate::PlatformAudio::Client* client);
   virtual PlatformImage2D* CreateImage2D(int width, int height);
+  virtual PlatformVideoDecoder* CreateVideoDecoder(
+      const PP_VideoDecoderConfig& decoder_config);
   virtual void DidChangeNumberOfFindResults(int identifier,
                                             int total,
                                             bool final_result);