cc: Emulate BeginFrame in OutputSurfaces that don't support it natively

cc/scheduler/scheduler_unittest.cc

 // Copyright 2011 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/scheduler/scheduler.h"
 
 #include <string>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 50 matching lines @@
   }
 
   void SetDrawWillHappen(bool draw_will_happen) {
     draw_will_happen_ = draw_will_happen;
   }
   void SetSwapWillHappenIfDrawHappens(bool swap_will_happen_if_draw_happens) {
     swap_will_happen_if_draw_happens_ = swap_will_happen_if_draw_happens;
   }
 
   // Scheduler Implementation.
+  virtual void SetNeedsBeginFrameOnImplThread(bool enable) OVERRIDE {
+    actions_.push_back("SetNeedsBeginFrameOnImplThread");
+    states_.push_back(scheduler_->StateAsStringForTesting());
+  }
   virtual void ScheduledActionSendBeginFrameToMainThread() OVERRIDE {
     actions_.push_back("ScheduledActionSendBeginFrameToMainThread");
     states_.push_back(scheduler_->StateAsStringForTesting());
   }
   virtual ScheduledActionDrawAndSwapResult
   ScheduledActionDrawAndSwapIfPossible() OVERRIDE {
     actions_.push_back("ScheduledActionDrawAndSwapIfPossible");
     states_.push_back(scheduler_->StateAsStringForTesting());
     num_draws_++;
     return ScheduledActionDrawAndSwapResult(draw_will_happen_,
@@ skipping 559 matching lines @@
   scheduler->DidLoseOutputSurface();
   // Verifying that it's 1 so that we know that it's reset on recreate.
   EXPECT_EQ(1, controller_ptr->NumFramesPending());
 
   scheduler->DidCreateAndInitializeOutputSurface();
   EXPECT_EQ(0, controller_ptr->NumFramesPending());
 }
 
 }  // namespace
 }  // namespace cc