cc: Track BeginMainFrame more precisely in CompositorTimingHistory.

components/mus/surfaces/surfaces_scheduler.cc

 // Copyright 2014 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 "components/mus/surfaces/surfaces_scheduler.h"
 
 #include "cc/debug/rendering_stats_instrumentation.h"
 #include "cc/scheduler/compositor_timing_history.h"
 #include "cc/surfaces/display.h"
 
@@ skipping 42 matching lines @@
   auto it = displays_.find(display);
   DCHECK(it != displays_.end());
   displays_.erase(it);
 }
 
 void SurfacesScheduler::WillBeginImplFrame(const cc::BeginFrameArgs& args) {}
 
 void SurfacesScheduler::DidFinishImplFrame() {}
 
 void SurfacesScheduler::ScheduledActionSendBeginMainFrame() {
-  scheduler_->NotifyBeginMainFrameStarted();
+  scheduler_->NotifyBeginMainFrameStarted(base::TimeTicks());
   scheduler_->NotifyReadyToCommit();
 }
 
 cc::DrawResult SurfacesScheduler::ScheduledActionDrawAndSwapIfPossible() {
   for (const auto& it : displays_) {
     it->DrawAndSwap();
   }
   return cc::DRAW_SUCCESS;
 }
 
@@ skipping 17 matching lines @@
 void SurfacesScheduler::ScheduledActionPrepareTiles() {}
 
 void SurfacesScheduler::ScheduledActionInvalidateOutputSurface() {}
 
 void SurfacesScheduler::SendBeginFramesToChildren(
     const cc::BeginFrameArgs& args) {}
 
 void SurfacesScheduler::SendBeginMainFrameNotExpectedSoon() {}
 
 }  // namespace mus