switch GatherPixelRefs to use SkBaseDevice instead of SkBitmapDevice

include/core/SkDevice.h

 
 /*
  * Copyright 2010 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 SkDevice_DEFINED
@@ skipping 65 matching lines @@
     virtual const SkDeviceProperties& getDeviceProperties() const {
         //Currently, all the properties are leaky.
         return fLeakyProperties;
     }
 
     /**
      *  Return the bounds of the device in the coordinate space of the root
      *  canvas. The root device will have its top-left at 0,0, but other devices
      *  such as those associated with saveLayer may have a non-zero origin.
      */
-    virtual void getGlobalBounds(SkIRect* bounds) const = 0;
+    void getGlobalBounds(SkIRect* bounds) const {
+        const SkIPoint& origin = this->getOrigin();
+        bounds->setXYWH(origin.x(), origin.y(), this->width(), this->height());

[scroggo, 2013/11/12 18:22:00]

Check for NULL or assert?

[reed1, 2013/11/12 18:33:00]

Done.

+    }
+    
 
     /** Returns true if the device's bitmap's config treats every pixel as
         implicitly opaque.
     */
     virtual bool isOpaque() const = 0;
 
     /** Return the bitmap config of the device's pixels
      */
     SK_ATTR_DEPRECATED("want to hide configness of the device -- don't use")
     virtual SkBitmap::Config config() const = 0;
@@ skipping 318 matching lines @@
     SkDeviceProperties fLeakyProperties;
 
 #ifdef SK_DEBUG
     bool        fAttachedToCanvas;
 #endif
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif