Update from https://crrev.com/306655

cc/scheduler/begin_frame_source.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 "cc/scheduler/begin_frame_source.h"
 
 #include "base/auto_reset.h"
 #include "base/debug/trace_event.h"
 #include "base/debug/trace_event_argument.h"
+#include "base/location.h"
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "cc/scheduler/delay_based_time_source.h"
 #include "cc/scheduler/scheduler.h"
 #include "ui/gfx/frame_time.h"
 
 #ifdef NDEBUG
 #define DEBUG_FRAMES(...)
 #else
 #define DEBUG_FRAMES(name, arg1_name, arg1_val, arg2_name, arg2_val)   \
@@ skipping 155 matching lines @@
 }
 
 void BackToBackBeginFrameSource::BeginFrame() {
   send_begin_frame_posted_ = false;
 
   if (!needs_begin_frames_)
     return;
 
   base::TimeTicks now = Now();
   BeginFrameArgs args = BeginFrameArgs::Create(
-      now, now + BeginFrameArgs::DefaultInterval(),
+      BEGINFRAME_FROM_HERE, now, now + BeginFrameArgs::DefaultInterval(),
       BeginFrameArgs::DefaultInterval(), BeginFrameArgs::NORMAL);
   CallOnBeginFrame(args);
 }
 
 // BeginFrameSource support
 
 void BackToBackBeginFrameSource::DidFinishFrame(size_t remaining_frames) {
   if (remaining_frames == 0) {
     OnNeedsBeginFramesChange(NeedsBeginFrames());
   }
@@ skipping 39 matching lines @@
 void SyntheticBeginFrameSource::OnUpdateVSyncParameters(
     base::TimeTicks new_vsync_timebase,
     base::TimeDelta new_vsync_interval) {
   time_source_->SetTimebaseAndInterval(new_vsync_timebase, new_vsync_interval);
 }
 
 BeginFrameArgs SyntheticBeginFrameSource::CreateBeginFrameArgs(
     base::TimeTicks frame_time,
     BeginFrameArgs::BeginFrameArgsType type) {
   base::TimeTicks deadline = time_source_->NextTickTime();
-  return BeginFrameArgs::Create(frame_time, deadline, time_source_->Interval(),
-                                type);
+  return BeginFrameArgs::Create(BEGINFRAME_FROM_HERE, frame_time, deadline,
+                                time_source_->Interval(), type);
 }
 
 // TimeSourceClient support
 void SyntheticBeginFrameSource::OnTimerTick() {
   CallOnBeginFrame(CreateBeginFrameArgs(time_source_->LastTickTime(),
                                         BeginFrameArgs::NORMAL));
 }
 
 // BeginFrameSourceMixIn support
 void SyntheticBeginFrameSource::OnNeedsBeginFramesChange(
@@ skipping 225 matching lines @@
   if (!observer_->LastUsedBeginFrameArgs().IsValid())
     return true;
 
   // Only allow new args have a *strictly bigger* frame_time value and statisfy
   // minimum interval requirement.
   return (args.frame_time >=
           observer_->LastUsedBeginFrameArgs().frame_time + minimum_interval_);
 }
 
 }  // namespace cc