Add initialization callback support for Video Decoder PPAPI.

webkit/plugins/ppapi/ppb_video_decoder_impl.cc

Index: webkit/plugins/ppapi/ppb_video_decoder_impl.cc
diff --git a/webkit/plugins/ppapi/ppb_video_decoder_impl.cc b/webkit/plugins/ppapi/ppb_video_decoder_impl.cc
index 76edf084db209379bf17774c1c78363fe2f3ac12..7cc37ba0c3b8767904f58a8af139d1a907699f9a 100644
--- a/webkit/plugins/ppapi/ppb_video_decoder_impl.cc
+++ b/webkit/plugins/ppapi/ppb_video_decoder_impl.cc
@@ -44,7 +44,8 @@ PP_Bool GetConfigs(PP_Instance instance_id,
 }
 
 PP_Resource Create(PP_Instance instance_id,
-                   PP_VideoConfigElement* decoder_config) {
+                   PP_VideoConfigElement* decoder_config,
+                   PP_CompletionCallback callback) {
   PluginInstance* instance = ResourceTracker::Get()->GetInstance(instance_id);
   if (!instance)
     return 0;
@@ -52,8 +53,10 @@ PP_Resource Create(PP_Instance instance_id,
   scoped_refptr<PPB_VideoDecoder_Impl> decoder(
       new PPB_VideoDecoder_Impl(instance));
 
-  if (!decoder->Init(const_cast<PP_VideoConfigElement*>(decoder_config)))
+  if (!decoder->Init(
+      const_cast<PP_VideoConfigElement*>(decoder_config), callback)) {
     return 0;
+  }
 
   return decoder->GetReference();
 }
@@ -212,7 +215,8 @@ bool PPB_VideoDecoder_Impl::GetConfigs(
   return true;
 }
 
-bool PPB_VideoDecoder_Impl::Init(PP_VideoConfigElement* decoder_config) {
+bool PPB_VideoDecoder_Impl::Init(PP_VideoConfigElement* decoder_config,
+                                 PP_CompletionCallback callback) {
   if (!instance())
     return false;
 
@@ -224,6 +228,8 @@ bool PPB_VideoDecoder_Impl::Init(PP_VideoConfigElement* decoder_config) {
   CopyToConfigList(decoder_config, &copied);
   platform_video_decoder_->Initialize(copied);
 
+  initialization_callback_ = callback;
+
   return platform_video_decoder_.get()? true : false;
 }
 
@@ -392,6 +398,15 @@ void PPB_VideoDecoder_Impl::NotifyFlushDone() {
   PP_RunCompletionCallback(&callback, PP_OK);
 }
 
+void PPB_VideoDecoder_Impl::NotifyInitializeDone() {
+  if (initialization_callback_.func == NULL)
+    return;
+
+  PP_CompletionCallback callback = PP_BlockUntilComplete();
+  std::swap(callback, initialization_callback_);
+  PP_RunCompletionCallback(&callback, PP_OK);
+}
+
 }  // namespace ppapi
 }  // namespace webkit