| Index: cc/trees/proxy_impl.cc | 
| diff --git a/cc/trees/proxy_impl.cc b/cc/trees/proxy_impl.cc | 
| index 46df9ecb995d379525755fedbb4c644c18c5e696..35df5cb4bab46b2298e7dcb444ef78786379c036 100644 | 
| --- a/cc/trees/proxy_impl.cc | 
| +++ b/cc/trees/proxy_impl.cc | 
| @@ -493,6 +493,8 @@ void ProxyImpl::ScheduledActionSendBeginMainFrame(const BeginFrameArgs& args) { | 
| new BeginMainFrameAndCommitState); | 
| begin_main_frame_state->begin_frame_id = begin_frame_id; | 
| begin_main_frame_state->begin_frame_args = args; | 
| +  begin_main_frame_state->begin_frame_callbacks = | 
| +      layer_tree_host_impl_->ProcessLayerTreeMutations(); | 
| begin_main_frame_state->scroll_info = | 
| layer_tree_host_impl_->ProcessScrollDeltas(); | 
| begin_main_frame_state->memory_allocation_limit_bytes = | 
|  |