cc: Fixup cc to not use auto to deduce a raw pointer.

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 <stddef.h>
 
 #include "base/auto_reset.h"
 #include "base/location.h"
@@ skipping 151 matching lines @@
 
   observers_.erase(obs);
   if (observers_.empty())
     time_source_->SetActive(false);
 }
 
 void DelayBasedBeginFrameSource::OnTimerTick() {
   BeginFrameArgs args = CreateBeginFrameArgs(time_source_->LastTickTime(),
                                              BeginFrameArgs::NORMAL);
   std::unordered_set<BeginFrameObserver*> observers(observers_);
-  for (auto& obs : observers) {
+  for (auto* obs : observers) {
     BeginFrameArgs last_args = obs->LastUsedBeginFrameArgs();
     if (!last_args.IsValid() ||
         (args.frame_time >
          last_args.frame_time + args.interval / kDoubleTickDivisor))
       obs->OnBeginFrame(args);
   }
 }
 
 }  // namespace cc