[cc] Add nearest neighbor filtering for TextureLayer.

cc/blink/web_external_texture_layer_impl.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_BLINK_WEB_EXTERNAL_TEXTURE_LAYER_IMPL_H_
 #define CC_BLINK_WEB_EXTERNAL_TEXTURE_LAYER_IMPL_H_
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
@@ skipping 25 matching lines @@
       blink::WebExternalTextureLayerClient*);
   virtual ~WebExternalTextureLayerImpl();
 
   // blink::WebExternalTextureLayer implementation.
   virtual blink::WebLayer* layer();
   virtual void clearTexture();
   virtual void setOpaque(bool opaque);
   virtual void setPremultipliedAlpha(bool premultiplied);
   virtual void setBlendBackgroundColor(bool blend);
   virtual void setRateLimitContext(bool rate_limit);
+  virtual void setNearestNeighbor(bool nearest_neighbor);
 
   // TextureLayerClient implementation.
   bool PrepareTextureMailbox(
       cc::TextureMailbox* mailbox,
       scoped_ptr<cc::SingleReleaseCallback>* release_callback,
       bool use_shared_memory) override;
 
  private:
   static void DidReleaseMailbox(
       base::WeakPtr<WebExternalTextureLayerImpl> layer,
       const blink::WebExternalTextureMailbox& mailbox,
       WebExternalBitmapImpl* bitmap,
       unsigned sync_point,
       bool lost_resource);
 
   WebExternalBitmapImpl* AllocateBitmap();
 
   blink::WebExternalTextureLayerClient* client_;
   scoped_ptr<WebLayerImpl> layer_;
   ScopedVector<WebExternalBitmapImpl> free_bitmaps_;
 
   DISALLOW_COPY_AND_ASSIGN(WebExternalTextureLayerImpl);
 };
 
 }  // namespace cc_blink
 
 #endif  // CC_BLINK_WEB_EXTERNAL_TEXTURE_LAYER_IMPL_H_