Merge Group Markers into Chromium Traces.

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 <set>
 #include <vector>
 
 #include "base/callback_helpers.h"
@@ skipping 82 matching lines @@
 
   if (lost_context_callback_proxy_)
     return true;
 
   context3d_->SetContextType(context_type_);
   if (!context3d_->InitializeOnCurrentThread())
     return false;
 
   InitializeCapabilities();
 
-  std::string unique_context_name =
+  const std::string unique_context_name =
       base::StringPrintf("%s-%p", debug_name_.c_str(), context3d_.get());
+  context3d_->pushGroupMarkerEXT(unique_context_name.c_str());

[vmiura, 2015/05/12 21:47:42]

Same here.

   context3d_->traceBeginCHROMIUM("gpu_toplevel", unique_context_name.c_str());
 
   lost_context_callback_proxy_.reset(new LostContextCallbackProxy(this));
   context3d_->GetCommandBufferProxy()->SetMemoryAllocationChangedCallback(
       base::Bind(&ContextProviderCommandBuffer::OnMemoryAllocationChanged,
                  base::Unretained(this)));
   return true;
 }
 
 void ContextProviderCommandBuffer::DetachFromThread() {
@@ skipping 128 matching lines @@
 
 void ContextProviderCommandBuffer::SetMemoryPolicyChangedCallback(
     const MemoryPolicyChangedCallback& memory_policy_changed_callback) {
   DCHECK(context_thread_checker_.CalledOnValidThread());
   DCHECK(memory_policy_changed_callback_.is_null() ||
          memory_policy_changed_callback.is_null());
   memory_policy_changed_callback_ = memory_policy_changed_callback;
 }
 
 }  // namespace content