Update filter tool to allow more flexible filtering

https://codereview.appspot.com/7227055/



git-svn-id: http://skia.googlecode.com/svn/trunk@7492 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/debugger/SkDebugCanvas.h b/debugger/SkDebugCanvas.h
index aafa802..238c5c0 100644
--- a/debugger/SkDebugCanvas.h
+++ b/debugger/SkDebugCanvas.h
@@ -200,8 +200,10 @@
 
     virtual bool translate(SkScalar dx, SkScalar dy) SK_OVERRIDE;
 
+    static const int kVizImageHeight = 256;
+    static const int kVizImageWidth = 256;
+
 private:
-    typedef SkCanvas INHERITED;
     SkTDArray<SkDrawCommand*> fCommandVector;
     int fHeight;
     int fWidth;
@@ -231,6 +233,8 @@
         drawing anything else into the canvas.
      */
     void applyUserTransform(SkCanvas* canvas);
+
+    typedef SkCanvas INHERITED;
 };
 
 #endif