blink: Remove unused or rarely used methods from WebGraphicsContext3D

content/common/gpu/client/context_provider_command_buffer.cc

 // Copyright (c) 2013 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 "content/common/gpu/client/context_provider_command_buffer.h"
 
 #include <stddef.h>
 #include <set>
 #include <utility>
 #include <vector>
@@ skipping 89 matching lines @@
 
   WebContext3DNoChecks()->SetContextType(context_type_);
   if (!WebContext3DNoChecks()->InitializeOnCurrentThread())
     return false;
 
   gr_interface_->BindToCurrentThread();
   InitializeCapabilities();
 
   std::string unique_context_name =
       base::StringPrintf("%s-%p", debug_name_.c_str(), WebContext3DNoChecks());
-  WebContext3DNoChecks()->traceBeginCHROMIUM("gpu_toplevel",
-                                             unique_context_name.c_str());
+  WebContext3DNoChecks()->GetImplementation()->TraceBeginCHROMIUM(
+      "gpu_toplevel", unique_context_name.c_str());
 
   lost_context_callback_proxy_.reset(new LostContextCallbackProxy(this));
   return true;
 }
 
 void ContextProviderCommandBuffer::DetachFromThread() {
   context_thread_checker_.DetachFromThread();
 }
 
 gpu::gles2::GLES2Interface* ContextProviderCommandBuffer::ContextGL() {
@@ skipping 77 matching lines @@
 
 void ContextProviderCommandBuffer::SetLostContextCallback(
     const LostContextCallback& lost_context_callback) {
   DCHECK(context_thread_checker_.CalledOnValidThread());
   DCHECK(lost_context_callback_.is_null() ||
          lost_context_callback.is_null());
   lost_context_callback_ = lost_context_callback;
 }
 
 }  // namespace content