Revert of 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 e1a6080093531d6eddcd4cbd4777487a6fc49a19..afdc33d63f73e5e3cca786ab76ce18a2c5303ea5 100644
--- a/content/renderer/pepper/pepper_video_encoder_host.cc
+++ b/content/renderer/pepper/pepper_video_encoder_host.cc
@@ -232,15 +232,6 @@
   return PP_ERROR_FAILED;
 }
 
-void PepperVideoEncoderHost::OnGpuControlLostContext() {
-#if DCHECK_IS_ON()
-  // This should never occur more than once.
-  DCHECK(!lost_context_);
-  lost_context_ = true;
-#endif
-  NotifyPepperError(PP_ERROR_RESOURCE_FAILED);
-}
-
 int32_t PepperVideoEncoderHost::OnHostMsgGetSupportedProfiles(
     ppapi::host::HostMessageContext* context) {
   std::vector<PP_VideoProfileDescription> pp_profiles;
@@ -528,8 +519,9 @@
     return false;
   }
 
-  command_buffer_->SetGpuControlClient(this);
-
+  command_buffer_->SetContextLostCallback(media::BindToCurrentLoop(
+      base::Bind(&PepperVideoEncoderHost::NotifyPepperError,
+                 weak_ptr_factory_.GetWeakPtr(), PP_ERROR_RESOURCE_FAILED)));
   if (!command_buffer_->Initialize()) {
     Close();
     return false;