cc: Implement unified BeginFrame on aura

cc/test/begin_frame_args_test.h

 // Copyright 2014 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.
 
 #ifndef CC_TEST_BEGIN_FRAME_ARGS_TEST_H_
 #define CC_TEST_BEGIN_FRAME_ARGS_TEST_H_
 
 #include <iosfwd>
 
 #include "base/time/time.h"
@@ skipping 28 matching lines @@
 BeginFrameArgs CreateBeginFrameArgsForTesting(
     BeginFrameArgs::CreationLocation location,
     scoped_refptr<TestNowSource> now_src);
 BeginFrameArgs CreateExpiredBeginFrameArgsForTesting(
     BeginFrameArgs::CreationLocation location,
     scoped_refptr<TestNowSource> now_src);
 
 // gtest helpers -- these *must* be in the same namespace as the types they
 // operate on.
 
-// Allow "EXPECT_EQ(args1, args2);"
-// We don't define operator!= because EXPECT_NE(args1, args2) isn't all that
-// sensible.
-bool operator==(const BeginFrameArgs& lhs, const BeginFrameArgs& rhs);
-
 // Allow gtest to pretty print begin frame args.
 ::std::ostream& operator<<(::std::ostream& os, const BeginFrameArgs& args);
 void PrintTo(const BeginFrameArgs& args, ::std::ostream* os);
 
 }  // namespace cc
 
 #endif  // CC_TEST_BEGIN_FRAME_ARGS_TEST_H_