Compile specific parts of the Android build with -O2.

gpu/command_buffer_service.gypi

 # 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_dirs': [
     '..',
   ],
   'all_dependent_settings': {
     'include_dirs': [
@@ skipping 121 matching lines @@
       'include_dirs': [
         '../third_party/khronos',
       ],
     }],
     ['OS in ("win", "android") or (OS == "linux" and use_x11 == 1)', {
       'sources': [
         'command_buffer/service/async_pixel_transfer_manager_egl.cc',
         'command_buffer/service/async_pixel_transfer_manager_egl.h',
       ],
     }],
-    ['OS=="android"', {
-      'configurations': {
-        'Release': {
-          'cflags': ['-O2']
-        }
-      }
-    }]
   ],
 }