cc: Introduce BeginFrame sequence numbers and acknowledgements.

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 <stdint.h>
 
 #include <iosfwd>
 
 #include "base/test/simple_test_tick_clock.h"
 #include "base/time/time.h"
 #include "cc/output/begin_frame_args.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace cc {
 
 // Functions for quickly creating BeginFrameArgs
 BeginFrameArgs CreateBeginFrameArgsForTesting(
-    BeginFrameArgs::CreationLocation location);
+    BeginFrameArgs::CreationLocation location,
+    uint64_t source_id,
+    uint64_t sequence_number);
 BeginFrameArgs CreateBeginFrameArgsForTesting(
     BeginFrameArgs::CreationLocation location,
+    uint64_t source_id,
+    uint64_t sequence_number,
     base::TimeTicks frame_time);
 BeginFrameArgs CreateBeginFrameArgsForTesting(
     BeginFrameArgs::CreationLocation location,
+    uint64_t source_id,
+    uint64_t sequence_number,
     int64_t frame_time,
     int64_t deadline,
     int64_t interval);
 BeginFrameArgs CreateBeginFrameArgsForTesting(
     BeginFrameArgs::CreationLocation location,
+    uint64_t source_id,
+    uint64_t sequence_number,
     int64_t frame_time,
     int64_t deadline,
     int64_t interval,
     BeginFrameArgs::BeginFrameArgsType type);
 
 // Creates a BeginFrameArgs using the fake Now value stored on the
 // OrderSimpleTaskRunner.
 BeginFrameArgs CreateBeginFrameArgsForTesting(
     BeginFrameArgs::CreationLocation location,
+    uint64_t source_id,
+    uint64_t sequence_number,
     base::SimpleTestTickClock* 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_