Add drawRegion() API to SkCanvas

src/core/SkPictureFlat.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef SkPictureFlat_DEFINED
 #define SkPictureFlat_DEFINED
 
 
@@ skipping 75 matching lines @@
     DRAW_ANNOTATION,
     DRAW_DRAWABLE,
     DRAW_DRAWABLE_MATRIX,
     DRAW_TEXT_RSXFORM,
 
     TRANSLATE_Z,
 
     DRAW_SHADOWED_PICTURE_LIGHTS,
     DRAW_IMAGE_LATTICE,
     DRAW_ARC,
+    DRAW_REGION,
 
-    LAST_DRAWTYPE_ENUM = DRAW_ARC
+    LAST_DRAWTYPE_ENUM = DRAW_REGION
 };
 
 // In the 'match' method, this constant will match any flavor of DRAW_BITMAP*
 static const int kDRAW_BITMAP_FLAVOR = LAST_DRAWTYPE_ENUM+1;
 
 enum DrawVertexFlags {
     DRAW_VERTICES_HAS_TEXS    = 0x01,
     DRAW_VERTICES_HAS_COLORS  = 0x02,
     DRAW_VERTICES_HAS_INDICES = 0x04,
     DRAW_VERTICES_HAS_XFER    = 0x08,
@@ skipping 66 matching lines @@
     void setupBuffer(SkReadBuffer& buffer) const {
         buffer.setFactoryPlayback(fArray, fCount);
     }
 
 private:
     int fCount;
     SkFlattenable::Factory* fArray;
 };
 
 #endif