Add PPAPI CDM video decoder initialization.

ppapi/proxy/ppb_instance_proxy.cc

Index: ppapi/proxy/ppb_instance_proxy.cc
diff --git a/ppapi/proxy/ppb_instance_proxy.cc b/ppapi/proxy/ppb_instance_proxy.cc
index 373451237eb3dd105b87e54054757c6c5a144c3a..d98f79979ff323d35deb8f3283304f9ccc7aca4e 100644
--- a/ppapi/proxy/ppb_instance_proxy.cc
+++ b/ppapi/proxy/ppb_instance_proxy.cc
@@ -167,6 +167,8 @@ bool PPB_Instance_Proxy::OnMessageReceived(const IPC::Message& msg) {
                         OnHostMsgKeyError)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_DeliverBlock,
                         OnHostMsgDeliverBlock)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_DecoderInitialized,
+                        OnHostMsgDecoderInitialized)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_DeliverFrame,
                         OnHostMsgDeliverFrame)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_DeliverSamples,
@@ -532,6 +534,17 @@ void PPB_Instance_Proxy::DeliverBlock(PP_Instance instance,
           serialized_block_info));
 }
 
+void PPB_Instance_Proxy::DecoderInitialized(PP_Instance instance,
+                                            PP_Bool success,
+                                            uint32_t request_id) {
+  dispatcher()->Send(
+      new PpapiHostMsg_PPBInstance_DecoderInitialized(
+          API_ID_PPB_INSTANCE,
+          instance,
+          success,
+          request_id));
+}
+
 void PPB_Instance_Proxy::DeliverFrame(PP_Instance instance,
                                       PP_Resource decrypted_frame,
                                       const PP_DecryptedFrameInfo* frame_info) {
@@ -952,6 +965,15 @@ void PPB_Instance_Proxy::OnHostMsgDeliverBlock(
     enter.functions()->DeliverBlock(instance, decrypted_block, &block_info);
 }
 
+void PPB_Instance_Proxy::OnHostMsgDecoderInitialized(
+    PP_Instance instance,
+    PP_Bool success,
+    uint32_t request_id) {
+  EnterInstanceNoLock enter(instance);
+  if (enter.succeeded())
+    enter.functions()->DecoderInitialized(instance, success, request_id);
+}
+
 void PPB_Instance_Proxy::OnHostMsgDeliverFrame(
     PP_Instance instance,
     PP_Resource decrypted_frame,