Refactoring the way begin frame sources inside scheduler work.

cc/test/scheduler_test_common.h

Index: cc/test/scheduler_test_common.h
diff --git a/cc/test/scheduler_test_common.h b/cc/test/scheduler_test_common.h
index 596358a205877ad26517cbcd54182ab602348254..5f62ff9eda2cb5fc6123f9d81b4db0e1bc8c454f 100644
--- a/cc/test/scheduler_test_common.h
+++ b/cc/test/scheduler_test_common.h
@@ -8,7 +8,10 @@
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
+#include "cc/output/begin_frame_args.h"
 #include "cc/scheduler/delay_based_time_source.h"
+#include "cc/scheduler/draw_swap_readback_result.h"
+#include "cc/scheduler/scheduler.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace cc {
@@ -46,6 +49,31 @@ class FakeDelayBasedTimeSource : public DelayBasedTimeSource {
   base::TimeTicks now_;
 };
 
+// SchedulerClient which does minimal possible to satisfy the interface.
+class StubSchedulerClient : public SchedulerClient {
+ public:
+  virtual void WillBeginImplFrame(const BeginFrameArgs& args) OVERRIDE {}
+  virtual void ScheduledActionSendBeginMainFrame() OVERRIDE {}
+  virtual DrawSwapReadbackResult ScheduledActionDrawAndSwapIfPossible()
+      OVERRIDE;
+  virtual DrawSwapReadbackResult ScheduledActionDrawAndSwapForced() OVERRIDE;
+  virtual DrawSwapReadbackResult ScheduledActionDrawAndReadback() OVERRIDE;
+  virtual void ScheduledActionAnimate() OVERRIDE {}
+  virtual void ScheduledActionCommit() OVERRIDE {}
+  virtual void ScheduledActionUpdateVisibleTiles() OVERRIDE {}
+  virtual void ScheduledActionActivatePendingTree() OVERRIDE {}
+  virtual void ScheduledActionBeginOutputSurfaceCreation() OVERRIDE {}
+  virtual void ScheduledActionManageTiles() OVERRIDE {}
+  virtual void DidAnticipatedDrawTimeChange(base::TimeTicks time) OVERRIDE {}
+  virtual base::TimeDelta DrawDurationEstimate() OVERRIDE;
+  virtual base::TimeDelta BeginMainFrameToCommitDurationEstimate() OVERRIDE;
+  virtual base::TimeDelta CommitToActivateDurationEstimate() OVERRIDE;
+  virtual void DidBeginImplFrameDeadline() OVERRIDE {}
+
+ protected:
+  virtual ~StubSchedulerClient() {}
+};
+
 }  // namespace cc
 
 #endif  // CC_TEST_SCHEDULER_TEST_COMMON_H_