| Index: cc/trees/layer_tree_host_impl.h
 | 
| diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
 | 
| index 55fea0d13099cec67ff984f022b926a37d3e9d95..b8553cb323b236fa95fc6b52fd866c976b5e94a9 100644
 | 
| --- a/cc/trees/layer_tree_host_impl.h
 | 
| +++ b/cc/trees/layer_tree_host_impl.h
 | 
| @@ -415,6 +415,7 @@ class CC_EXPORT LayerTreeHostImpl
 | 
|  
 | 
|    virtual void WillBeginImplFrame(const BeginFrameArgs& args);
 | 
|    virtual void DidFinishImplFrame();
 | 
| +  void DidNotProduceFrame(const BeginFrameAck& ack);
 | 
|    void DidModifyTilePriorities();
 | 
|  
 | 
|    LayerTreeImpl* active_tree() { return active_tree_.get(); }
 | 
| 
 |