Update from https://crrev.com/317530

cc/resources/raster_source.h

 // 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.
 
 #ifndef CC_RESOURCES_RASTER_SOURCE_H_
 #define CC_RESOURCES_RASTER_SOURCE_H_
 
 #include <vector>
 
 #include "base/memory/ref_counted.h"
@@ skipping 81 matching lines @@
 
   // Tracing functionality.
   virtual void DidBeginTracing() = 0;
   virtual void AsValueInto(base::trace_event::TracedValue* array) const = 0;
   virtual skia::RefPtr<SkPicture> GetFlattenedPicture() = 0;
   virtual size_t GetPictureMemoryUsage() const = 0;
 
   // Return true if LCD anti-aliasing may be used when rastering text.
   virtual bool CanUseLCDText() const = 0;
 
+  virtual scoped_refptr<RasterSource> CreateCloneWithoutLCDText() const = 0;
+
  protected:
   friend class base::RefCountedThreadSafe<RasterSource>;
 
   RasterSource() {}
   virtual ~RasterSource() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(RasterSource);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RASTER_SOURCE_H_