Add canFilterMaskGPU & filterMaskGPU to SkMaskFilter

tools/PictureRenderer.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef PictureRenderer_DEFINED
 #define PictureRenderer_DEFINED
 
@@ skipping 41 matching lines @@
 
     enum BBoxHierarchyType {
         kNone_BBoxHierarchyType = 0,
         kRTree_BBoxHierarchyType,
         kTileGrid_BBoxHierarchyType,
     };
 
     // this uses SkPaint::Flags as a base and adds additional flags
     enum DrawFilterFlags {
         kNone_DrawFilterFlag = 0,
-        kBlur_DrawFilterFlag = 0x8000, // toggles between blur and no blur
+        kMaskFilter_DrawFilterFlag = 0x8000, // toggles on/off mask filters (e.g., blurs)
         kHinting_DrawFilterFlag = 0x10000, // toggles between no hinting and normal hinting
         kSlightHinting_DrawFilterFlag = 0x20000, // toggles between slight and normal hinting
         kAAClip_DrawFilterFlag = 0x40000, // toggles between soft and hard clip
     };
 
-    SK_COMPILE_ASSERT(!(kBlur_DrawFilterFlag & SkPaint::kAllFlags), blur_flag_must_be_greater);
+    SK_COMPILE_ASSERT(!(kMaskFilter_DrawFilterFlag & SkPaint::kAllFlags), maskfilter_flag_must_be_greater);
     SK_COMPILE_ASSERT(!(kHinting_DrawFilterFlag & SkPaint::kAllFlags),
             hinting_flag_must_be_greater);
     SK_COMPILE_ASSERT(!(kSlightHinting_DrawFilterFlag & SkPaint::kAllFlags),
             slight_hinting_flag_must_be_greater);
 
     /**
      * Called with each new SkPicture to render.
      */
     virtual void init(SkPicture* pict);
 
@@ skipping 467 matching lines @@
 
     typedef PictureRenderer INHERITED;
 };
 
 extern PictureRenderer* CreateGatherPixelRefsRenderer();
 extern PictureRenderer* CreatePictureCloneRenderer();
 
 }
 
 #endif  // PictureRenderer_DEFINED