cc: Rename ImageDecodeController to ImageDecodeCache.

cc/playback/raster_source.h

Index: cc/playback/raster_source.h
diff --git a/cc/playback/raster_source.h b/cc/playback/raster_source.h
index 4fe6e5a373b8423a662921475ae878776e8c24ad..d040bcf9a1c8d9cb78340b55ce2cd523b4860f28 100644
--- a/cc/playback/raster_source.h
+++ b/cc/playback/raster_source.h
@@ -24,7 +24,7 @@ class ColorSpace;
 namespace cc {
 class DisplayItemList;
 class DrawImage;
-class ImageDecodeController;
+class ImageDecodeCache;
 
 class CC_EXPORT RasterSource : public base::RefCountedThreadSafe<RasterSource> {
  public:
@@ -128,22 +128,19 @@ class CC_EXPORT RasterSource : public base::RefCountedThreadSafe<RasterSource> {
 
   // Image decode controller should be set once. Its lifetime has to exceed that
   // of the raster source, since the raster source will access it during raster.
-  void set_image_decode_controller(
-      ImageDecodeController* image_decode_controller) {
-    DCHECK(image_decode_controller);
-    image_decode_controller_ = image_decode_controller;
+  void set_image_decode_cache(ImageDecodeCache* image_decode_cache) {
+    DCHECK(image_decode_cache);
+    image_decode_cache_ = image_decode_cache;
   }
 
-  // Returns the ImageDecodeController, currently only used by
+  // Returns the ImageDecodeCache, currently only used by
   // GpuRasterBufferProvider in order to create its own ImageHijackCanvas.
   // Because of the MultiPictureDraw approach used by GPU raster, it does not
   // integrate well with the use of the ImageHijackCanvas internal to this
   // class. See gpu_raster_buffer_provider.cc for more information.
   // TODO(crbug.com/628394): Redesign this to avoid exposing
-  // ImageDecodeController from the raster source.
-  ImageDecodeController* image_decode_controller() const {
-    return image_decode_controller_;
-  }
+  // ImageDecodeCache from the raster source.
+  ImageDecodeCache* image_decode_cache() const { return image_decode_cache_; }
 
  protected:
   friend class base::RefCountedThreadSafe<RasterSource>;
@@ -171,7 +168,7 @@ class CC_EXPORT RasterSource : public base::RefCountedThreadSafe<RasterSource> {
 
   // In practice, this is only set once before raster begins, so it's ok with
   // respect to threading.
-  ImageDecodeController* image_decode_controller_;
+  ImageDecodeCache* image_decode_cache_;
 
  private:
   void RasterCommon(SkCanvas* canvas, SkPicture::AbortCallback* callback) const;