[cc] Add nearest neighbor filtering for PictureLayer.

cc/blink/web_image_layer_impl.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/blink/web_image_layer_impl.h"
 
 #include "cc/blink/web_layer_impl.h"
 #include "cc/blink/web_layer_impl_fixed_bounds.h"
 #include "cc/layers/image_layer.h"
 #include "cc/layers/picture_image_layer.h"
@@ skipping 17 matching lines @@
 void WebImageLayerImpl::setImageBitmap(const SkBitmap& bitmap) {
   if (WebLayerImpl::UsingPictureLayer()) {
     static_cast<cc::PictureImageLayer*>(layer_->layer())->SetBitmap(bitmap);
     static_cast<WebLayerImplFixedBounds*>(layer_.get())
         ->SetFixedBounds(gfx::Size(bitmap.width(), bitmap.height()));
   } else {
     static_cast<cc::ImageLayer*>(layer_->layer())->SetBitmap(bitmap);
   }
 }
 
+void WebImageLayerImpl::setNearestNeighbor(bool nearest_neighbor) {
+  if (WebLayerImpl::UsingPictureLayer()) {
+    static_cast<cc::PictureImageLayer*>(layer_->layer())
+        ->SetNearestNeighbor(nearest_neighbor);
+  }
+}
+
 }  // namespace cc_blink