Pipe impl_latency_takes_priority_ to the RenderScheduler.

cc/scheduler/begin_frame_source.cc

Index: cc/scheduler/begin_frame_source.cc
diff --git a/cc/scheduler/begin_frame_source.cc b/cc/scheduler/begin_frame_source.cc
index 4b5917a3ee2e451517b2faefcccbe9e4cf30fe48..c6c650694eb8f761440ad7960b02a69de54f05bc 100644
--- a/cc/scheduler/begin_frame_source.cc
+++ b/cc/scheduler/begin_frame_source.cc
@@ -184,7 +184,7 @@ void BackToBackBeginFrameSource::BeginFrame() {
   base::TimeTicks now = Now();
   BeginFrameArgs args = BeginFrameArgs::Create(
       BEGINFRAME_FROM_HERE, now, now + BeginFrameArgs::DefaultInterval(),
-      BeginFrameArgs::DefaultInterval(), BeginFrameArgs::NORMAL);
+      BeginFrameArgs::DefaultInterval(), BeginFrameArgs::NORMAL, true);
   CallOnBeginFrame(args);
 }
 
@@ -238,7 +238,7 @@ BeginFrameArgs SyntheticBeginFrameSource::CreateBeginFrameArgs(
     BeginFrameArgs::BeginFrameArgsType type) {
   base::TimeTicks deadline = time_source_->NextTickTime();
   return BeginFrameArgs::Create(BEGINFRAME_FROM_HERE, frame_time, deadline,
-                                time_source_->Interval(), type);
+                                time_source_->Interval(), type, true);
 }
 
 // TimeSourceClient support