Add the swap size to the PostSubBuffer trace event

gpu/command_buffer/client/gles2_implementation.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.
 
 // A class to emulate GLES2 over command buffers.
 
 #include "../client/gles2_implementation.h"
 
 #include <algorithm>
 #include <map>
@@ skipping 3057 matching lines @@
       << texture << ")");
   TRACE_EVENT0("gpu", "GLES2::DestroyStreamTextureCHROMIUM");
   helper_->DestroyStreamTextureCHROMIUM(texture);
 }
 
 void GLES2Implementation::PostSubBufferCHROMIUM(
     GLint x, GLint y, GLint width, GLint height) {
   GPU_CLIENT_SINGLE_THREAD_CHECK();
   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] PostSubBufferCHROMIUM("
       << x << ", " << y << ", " << width << ", " << height << ")");
-  TRACE_EVENT0("gpu", "GLES2::PostSubBufferCHROMIUM");
+  TRACE_EVENT2("gpu", "GLES2::PostSubBufferCHROMIUM",
+               "width", width, "height", height);
 
   // Same flow control as GLES2Implementation::SwapBuffers (see comments there).
   swap_buffers_tokens_.push(helper_->InsertToken());
   helper_->PostSubBufferCHROMIUM(x, y, width, height);
   helper_->CommandBufferHelper::Flush();
   if (swap_buffers_tokens_.size() > kMaxSwapBuffers + 1) {
     helper_->WaitForToken(swap_buffers_tokens_.front());
     swap_buffers_tokens_.pop();
   }
 }
@@ skipping 337 matching lines @@
 
 void GLES2Implementation::PopGroupMarkerEXT() {
   GPU_CLIENT_SINGLE_THREAD_CHECK();
   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glPopGroupMarkerEXT()");
   helper_->PopGroupMarkerEXT();
   debug_marker_manager_.PopGroup();
 }
 
 }  // namespace gles2
 }  // namespace gpu