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

gpu/gles2_conform_support/egl/display.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/gles2_conform_support/egl/display.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <vector>
@@ skipping 304 matching lines @@
   } else {
     DCHECK(IsValidSurface(draw));
     DCHECK(IsValidSurface(read));
     DCHECK(IsValidContext(ctx));
     gles2::SetGLContext(context_.get());
     gl_context_->MakeCurrent(gl_surface_.get());
   }
   return true;
 }
 
-void Display::SetGpuControlClient(gpu::GpuControlClient*) {
-  // The client is not currently called, so don't store it.
-}
-
 gpu::Capabilities Display::GetCapabilities() {
   return decoder_->GetCapabilities();
 }
 
 int32_t Display::CreateImage(ClientBuffer buffer,
                              size_t width,
                              size_t height,
                              unsigned internalformat) {
   NOTIMPLEMENTED();
   return -1;
@@ skipping 59 matching lines @@
 void Display::SignalSyncToken(const gpu::SyncToken& sync_token,
                               const base::Closure& callback) {
   NOTIMPLEMENTED();
 }
 
 bool Display::CanWaitUnverifiedSyncToken(const gpu::SyncToken* sync_token) {
   return false;
 }
 
 }  // namespace egl