Make lost context and error message callbacks on GpuControl go to client

content/renderer/pepper/pepper_video_encoder_host.cc

Index: content/renderer/pepper/pepper_video_encoder_host.cc
diff --git a/content/renderer/pepper/pepper_video_encoder_host.cc b/content/renderer/pepper/pepper_video_encoder_host.cc
index 78987e9a923ca78b01fbf3441637d2009cb69c0c..cf34d284438af275592ab33bbf86428ad3ecedf4 100644
--- a/content/renderer/pepper/pepper_video_encoder_host.cc
+++ b/content/renderer/pepper/pepper_video_encoder_host.cc
@@ -232,6 +232,10 @@ int32_t PepperVideoEncoderHost::OnResourceMessageReceived(
   return PP_ERROR_FAILED;
 }
 
+void PepperVideoEncoderHost::OnGpuControlLostContext() {
+  NotifyPepperError(PP_ERROR_RESOURCE_FAILED);
+}
+
 int32_t PepperVideoEncoderHost::OnHostMsgGetSupportedProfiles(
     ppapi::host::HostMessageContext* context) {
   std::vector<PP_VideoProfileDescription> pp_profiles;
@@ -519,9 +523,8 @@ bool PepperVideoEncoderHost::EnsureGpuChannel() {
     return false;
   }
 
-  command_buffer_->SetContextLostCallback(media::BindToCurrentLoop(
-      base::Bind(&PepperVideoEncoderHost::NotifyPepperError,
-                 weak_ptr_factory_.GetWeakPtr(), PP_ERROR_RESOURCE_FAILED)));
+  command_buffer_->SetGpuControlClient(this);
+
   if (!command_buffer_->Initialize()) {
     Close();
     return false;