Add image as a draw type that can be filtered

include/core/SkDrawFilter.h

 
 /*
  * Copyright 2011 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkDrawFilter_DEFINED
@@ skipping 17 matching lines @@
     enum Type {
         kPaint_Type,
         kPoint_Type,
         kLine_Type,
         kBitmap_Type,
         kRect_Type,
         kRRect_Type,
         kOval_Type,
         kPath_Type,
         kText_Type,
+        kImage_Type,
     };
 
     enum {
-        kTypeCount = kText_Type + 1
+        kTypeCount = kImage_Type + 1
     };
 
     /**
      *  Called with the paint that will be used to draw the specified type.
      *  The implementation may modify the paint as they wish. If filter()
      *  returns false, the draw will be skipped.
      */
     virtual bool filter(SkPaint*, Type) = 0;
 
 private:
     typedef SkRefCnt INHERITED;
 };
 
 #endif