Send compositor frame IPC with metadata.

content/browser/android/content_startup_flags.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/android/content_startup_flags.h"
 
 #include "base/string_number_conversions.h"
 #include "base/command_line.h"
 #include "base/logging.h"
+#include "cc/switches.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/content_switches.h"
 #include "ui/base/ui_base_switches.h"
 
 namespace content {
 
 void SetContentCommandLineFlags(int max_render_process_count) {
   // May be called multiple times, to cover all possible program entry points.
   static bool already_initialized = false;
@@ skipping 33 matching lines @@
   parsed_command_line->AppendSwitch(switches::kEnableGestureTapHighlight);
   parsed_command_line->AppendSwitch(switches::kEnableCssTransformPinch);
 
   // Run the GPU service as a thread in the browser instead of as a
   // standalone process.
   parsed_command_line->AppendSwitch(switches::kInProcessGPU);
 
   // Always use fixed layout and viewport tag.
   parsed_command_line->AppendSwitch(switches::kEnableFixedLayout);
   parsed_command_line->AppendSwitch(switches::kEnableViewport);
+
+  parsed_command_line->AppendSwitch(
+      cc::switches::kEnableCompositorFrameMessage);
 }
 
 }  // namespace content