Merge Group Markers into Chromium Traces.

content/browser/renderer_host/render_widget_host_view_android.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 "content/browser/renderer_host/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 
 #include "base/android/build_info.h"
 #include "base/basictypes.h"
@@ skipping 192 matching lines @@
       3 * full_screen_texture_size_in_bytes, kDefaultMaxTransferBufferSize);
   limits.mapped_memory_reclaim_limit =
       WebGraphicsContext3DCommandBufferImpl::kNoLimit;
   bool lose_context_when_out_of_memory = false;
   scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context(
       new WebGraphicsContext3DCommandBufferImpl(
           0,  // offscreen
           url, gpu_channel_host.get(), attrs, lose_context_when_out_of_memory,
           limits, nullptr));
   if (context->InitializeOnCurrentThread()) {
-    context->traceBeginCHROMIUM(
-        "gpu_toplevel",
+    const std::string label =
         base::StringPrintf("CmdBufferImageTransportFactory-%p",
-                           context.get()).c_str());
+                           context.get());
+    context->pushGroupMarkerEXT(label.c_str());
+    context->traceBeginCHROMIUM("gpu_toplevel", label.c_str());

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

Same here.

   } else {
     context.reset();
   }
 
   return context.Pass();
 }
 
 // This can only be used for readback postprocessing. It may return null if the
 // channel was lost and not reestablished yet.
 GLHelper* GetPostReadbackGLHelper() {
@@ skipping 1788 matching lines @@
   results->orientationAngle = display.RotationAsDegree();
   results->orientationType =
       RenderWidgetHostViewBase::GetOrientationTypeForMobile(display);
   gfx::DeviceDisplayInfo info;
   results->depth = info.GetBitsPerPixel();
   results->depthPerComponent = info.GetBitsPerComponent();
   results->isMonochrome = (results->depthPerComponent == 0);
 }
 
 } // namespace content