android webview: allow cc to fail hardware draw

cc/scheduler/scheduler.h

 // 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.
 
 #ifndef CC_SCHEDULER_SCHEDULER_H_
 #define CC_SCHEDULER_SCHEDULER_H_
 
 #include <deque>
 #include <string>
 
@@ skipping 59 matching lines @@
   void OnDrawForOutputSurface();
 
   const SchedulerSettings& settings() const { return settings_; }
 
   void CommitVSyncParameters(base::TimeTicks timebase,
                              base::TimeDelta interval);
   void SetEstimatedParentDrawTime(base::TimeDelta draw_time);
 
   void SetVisible(bool visible);
   bool visible() { return state_machine_.visible(); }
+  void SetResourcelessSoftareDraw(bool resourceless_draw);
   void SetCanDraw(bool can_draw);
   void NotifyReadyToActivate();
   void NotifyReadyToDraw();
   void SetThrottleFrameProduction(bool throttle);
 
   void SetNeedsBeginMainFrame();
 
   void SetNeedsRedraw();
 
   void SetNeedsAnimate();
@@ skipping 131 matching lines @@
   }
 
   base::WeakPtrFactory<Scheduler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Scheduler);
 };
 
 }  // namespace cc
 
 #endif  // CC_SCHEDULER_SCHEDULER_H_