Update from https://crrev.com/308996

cc/resources/picture_pile_impl.cc

 // Copyright 2012 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 <algorithm>
 #include <limits>
 #include <set>
 
 #include "base/debug/trace_event.h"
 #include "cc/base/region.h"
@@ skipping 10 matching lines @@
 #ifdef NDEBUG
 const bool kDefaultClearCanvasSetting = false;
 #else
 const bool kDefaultClearCanvasSetting = true;
 #endif
 
 }  // namespace
 
 namespace cc {
 
-scoped_refptr<PicturePileImpl> PicturePileImpl::Create() {
-  return make_scoped_refptr(new PicturePileImpl);
-}
-
 scoped_refptr<PicturePileImpl> PicturePileImpl::CreateFromPicturePile(
     const PicturePile* other) {
   return make_scoped_refptr(new PicturePileImpl(other));
 }
 
 PicturePileImpl::PicturePileImpl()
     : background_color_(SK_ColorTRANSPARENT),
       requires_clear_(true),
       can_use_lcd_text_(false),
       is_solid_color_(false),
@@ skipping 417 matching lines @@
        ++it) {
     const Picture* picture = it->second.GetPicture();
     if (picture && (processed_pictures.count(picture) == 0)) {
       picture->EmitTraceSnapshot();
       processed_pictures.insert(picture);
     }
   }
 }
 
 }  // namespace cc