Simplify Image::isTextureBacked()

third_party/WebKit/Source/platform/graphics/UnacceleratedStaticBitmapImage.h

 // Copyright 2016 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 UnacceleratedStaticBitmapImage_h
 #define UnacceleratedStaticBitmapImage_h
 
 #include "platform/graphics/StaticBitmapImage.h"
 
 namespace blink {
 
 class PLATFORM_EXPORT UnacceleratedStaticBitmapImage final
     : public StaticBitmapImage {
  public:
   ~UnacceleratedStaticBitmapImage() override;
   static PassRefPtr<UnacceleratedStaticBitmapImage> create(sk_sp<SkImage>);
 
   bool currentFrameKnownToBeOpaque(MetadataMode = UseCurrentMetadata) override;
   IntSize size() const override;
   sk_sp<SkImage> imageForCurrentFrame(const ColorBehavior&) override;
-  // In our current design, the SkImage in this class is always *not*
-  // texture-backed.
-  bool isTextureBacked() { return false; }
 
   void draw(SkCanvas*,
             const SkPaint&,
             const FloatRect& dstRect,
             const FloatRect& srcRect,
             RespectImageOrientationEnum,
             ImageClampingMode,
             const ColorBehavior&) override;
 
  private:
   UnacceleratedStaticBitmapImage(sk_sp<SkImage>);
   sk_sp<SkImage> m_image;
 };
 
 }  // namespace blink
 
 #endif