cc: Remove background ticking from LTHI.

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/location.h"
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 293 matching lines @@
   DEBUG_FRAMES("BeginFrameSourceMultiplexer::SetMinimumInterval",
                "current minimum (us)",
                minimum_interval_.InMicroseconds(),
                "new minimum (us)",
                new_minimum_interval.InMicroseconds());
   DCHECK_GE(new_minimum_interval.ToInternalValue(), 0);
   minimum_interval_ = new_minimum_interval;
 }
 
 void BeginFrameSourceMultiplexer::AddSource(BeginFrameSource* new_source) {
-  DEBUG_FRAMES("BeginFrameSourceMultiplexer::AddSource",
-               "current active",
-               active_source_,
-               "source to remove",
-               new_source);
+  DEBUG_FRAMES("BeginFrameSourceMultiplexer::AddSource", "current active",
+               active_source_, "source to be added", new_source);
   DCHECK(new_source);
   DCHECK(!HasSource(new_source));
 
   source_list_.insert(new_source);
 
   // If there is no active source, set the new one as the active one.
   if (!active_source_)
     SetActiveSource(new_source);
 }
 
 void BeginFrameSourceMultiplexer::RemoveSource(
     BeginFrameSource* existing_source) {
-  DEBUG_FRAMES("BeginFrameSourceMultiplexer::RemoveSource",
-               "current active",
-               active_source_,
-               "source to remove",
-               existing_source);
+  DEBUG_FRAMES("BeginFrameSourceMultiplexer::RemoveSource", "current active",
+               active_source_, "source to be removed", existing_source);
   DCHECK(existing_source);
   DCHECK(HasSource(existing_source));
   DCHECK_NE(existing_source, active_source_);
   source_list_.erase(existing_source);
 }
 
 void BeginFrameSourceMultiplexer::SetActiveSource(
     BeginFrameSource* new_source) {
   DEBUG_FRAMES("BeginFrameSourceMultiplexer::SetActiveSource",
                "current active",
@@ skipping 125 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