cc: Make BackToBackBeginFrameSource a SyntheticBeginFrameSource.

cc/surfaces/display_scheduler_unittest.cc

 // Copyright 2015 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 "cc/surfaces/display_scheduler.h"
 
 #include "base/logging.h"
 #include "base/test/null_task_runner.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/output/begin_frame_args.h"
 #include "cc/surfaces/display.h"
+#include "cc/test/fake_external_begin_frame_source.h"
 #include "cc/test/scheduler_test_common.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace cc {
 namespace {
 
 const int kMaxPendingSwaps = 1;
 
 class FakeDisplaySchedulerClient : public DisplaySchedulerClient {
  public:
@@ skipping 41 matching lines @@
     return scheduler_begin_frame_deadline_count_;
   }
 
  protected:
   int scheduler_begin_frame_deadline_count_;
 };
 
 class DisplaySchedulerTest : public testing::Test {
  public:
   DisplaySchedulerTest()
-      : now_src_(new base::SimpleTestTickClock()),
+      : fake_begin_frame_source_(0.f, false),
+        now_src_(new base::SimpleTestTickClock()),
         task_runner_(new base::NullTaskRunner),
         client_(new FakeDisplaySchedulerClient),
         scheduler_(new TestDisplayScheduler(client_.get(),
                                             &fake_begin_frame_source_,
                                             task_runner_.get(),
                                             kMaxPendingSwaps)) {
     now_src_->Advance(base::TimeDelta::FromMicroseconds(10000));
   }
 
   ~DisplaySchedulerTest() override {}
 
   void SetUp() override { scheduler_->SetRootSurfaceResourcesLocked(false); }
 
   void BeginFrameForTest() {
     base::TimeTicks frame_time = now_src_->NowTicks();
     base::TimeDelta interval = BeginFrameArgs::DefaultInterval();
     base::TimeTicks deadline = frame_time + interval;
     fake_begin_frame_source_.TestOnBeginFrame(
         BeginFrameArgs::Create(BEGINFRAME_FROM_HERE, frame_time, deadline,
                                interval, BeginFrameArgs::NORMAL));
   }
 
  protected:
   base::SimpleTestTickClock& now_src() { return *now_src_; }
   FakeDisplaySchedulerClient& client() { return *client_; }
   DisplayScheduler& scheduler() { return *scheduler_; }
 
-  FakeBeginFrameSource fake_begin_frame_source_;
+  FakeExternalBeginFrameSource fake_begin_frame_source_;
 
   std::unique_ptr<base::SimpleTestTickClock> now_src_;
   scoped_refptr<base::NullTaskRunner> task_runner_;
   std::unique_ptr<FakeDisplaySchedulerClient> client_;
   std::unique_ptr<TestDisplayScheduler> scheduler_;
 };
 
 TEST_F(DisplaySchedulerTest, ResizeHasLateDeadlineUntilNewRootSurface) {
   SurfaceId root_surface_id1(0, 1, 0);
   SurfaceId root_surface_id2(0, 2, 0);
@@ skipping 324 matching lines @@
 
   scheduler_->SetRootSurfaceResourcesLocked(true);
   EXPECT_EQ(count++, scheduler_->scheduler_begin_frame_deadline_count());
 
   scheduler_->OutputSurfaceLost();
   EXPECT_EQ(count++, scheduler_->scheduler_begin_frame_deadline_count());
 }
 
 }  // namespace
 }  // namespace cc