Refactoring the way begin frame sources inside scheduler work.

cc/test/scheduler_test_common.cc

 // Copyright 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 "cc/test/scheduler_test_common.h"
 
 #include "base/logging.h"
 
 namespace cc {
 
 void FakeTimeSourceClient::OnTimerTick() {
   tick_called_ = true;
 }
 
 base::TimeTicks FakeDelayBasedTimeSource::Now() const { return now_; }
 
+DrawSwapReadbackResult
+StubSchedulerClient::ScheduledActionDrawAndSwapIfPossible() {
+  return DrawSwapReadbackResult(
+      DrawSwapReadbackResult::DRAW_SUCCESS, false, false);
+}
+DrawSwapReadbackResult StubSchedulerClient::ScheduledActionDrawAndSwapForced() {
+  return DrawSwapReadbackResult(
+      DrawSwapReadbackResult::DRAW_SUCCESS, false, false);
+}
+DrawSwapReadbackResult StubSchedulerClient::ScheduledActionDrawAndReadback() {
+  return DrawSwapReadbackResult(
+      DrawSwapReadbackResult::DRAW_SUCCESS, false, false);
+}
+base::TimeDelta StubSchedulerClient::DrawDurationEstimate() {
+  return base::TimeDelta::FromMilliseconds(4);
+}
+base::TimeDelta StubSchedulerClient::BeginMainFrameToCommitDurationEstimate() {
+  return base::TimeDelta::FromMilliseconds(3);
+}
+base::TimeDelta StubSchedulerClient::CommitToActivateDurationEstimate() {
+  return base::TimeDelta::FromMilliseconds(2);
+}
+
 }  // namespace cc