Refactor so chromium only GL extensions require gl2extchromium.h

gpu/command_buffer/common/gles2_cmd_utils_unittest.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 "gpu/command_buffer/common/gles2_cmd_utils.h"
 
 #include <limits>
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
+#include <GLES2/gl2extchromium.h>
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace gpu {
 namespace gles2 {
 
 class GLES2UtilTest : public testing:: Test {
  protected:
   GLES2Util util_;
 };
@@ skipping 263 matching lines @@
   CheckParseUniformName("u_name[020]", true, 6u, 20, true);
   CheckParseUniformName("u_name[0][0]", true, 9u, 0, true);
   CheckParseUniformName("u_name[3][2]", true, 9u, 2, true);
   CheckParseUniformName("u_name[03][02]", true, 10u, 2, true);
   CheckParseUniformName("u_name[30][20]", true, 10u, 20, true);
   CheckParseUniformName("u_name[030][020]", true, 11u, 20, true);
 }
 
 }  // namespace gles2
 }  // namespace gpu