stop calling SkCanvas::getDevice

include/utils/SkDeferredCanvas.h

Index: include/utils/SkDeferredCanvas.h
diff --git a/include/utils/SkDeferredCanvas.h b/include/utils/SkDeferredCanvas.h
index 31ebce48b3720cae5b644edfeadf7d379e8da877..526bec1a4323202ec63f7cfbc5f8bbad02e20a5d 100644
--- a/include/utils/SkDeferredCanvas.h
+++ b/include/utils/SkDeferredCanvas.h
@@ -131,6 +131,7 @@ public:
      * rendered using the deferred canvas.
      */
     void setBitmapSizeThreshold(size_t sizeThreshold);
+    size_t getBitmapSizeThreshold() const { return fBitmapSizeThreshold; }
 
     /**
      * Executes all pending commands without drawing
@@ -240,7 +241,9 @@ private:
     bool isFullFrame(const SkRect*, const SkPaint*) const;
     void validate() const;
     void init();
-    bool            fDeferredDrawing;
+
+    size_t fBitmapSizeThreshold;
+    bool   fDeferredDrawing;
 
     friend class SkDeferredCanvasTester; // for unit testing
     typedef SkCanvas INHERITED;