Remove SkGrPixelRef

src/image/SkImage_Base.h

Index: src/image/SkImage_Base.h
diff --git a/src/image/SkImage_Base.h b/src/image/SkImage_Base.h
index c01d9af63528efb18900ad0fa9a3bd55af3bdda1..f1b902bd84118b2c0fc646c60ed68a6ed7f9dcb1 100644
--- a/src/image/SkImage_Base.h
+++ b/src/image/SkImage_Base.h
@@ -61,12 +61,6 @@ public:
 
     virtual bool onIsLazyGenerated() const { return false; }
 
-    // Return a bitmap suitable for passing to image-filters
-    // For now, that means wrapping textures into SkGrPixelRefs...
-    virtual bool asBitmapForImageFilters(SkBitmap* bitmap) const {
-        return this->getROPixels(bitmap, kAllow_CachingHint);
-    }
-
     // Call when this image is part of the key to a resourcecache entry. This allows the cache
     // to know automatically those entries can be purged when this SkImage deleted.
     void notifyAddedToCache() const {