add drawData() to canvas, to record data blobs



git-svn-id: http://skia.googlecode.com/svn/trunk@452 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/utils/SkProxyCanvas.h b/include/utils/SkProxyCanvas.h
index f2e57ab..082e0fd 100644
--- a/include/utils/SkProxyCanvas.h
+++ b/include/utils/SkProxyCanvas.h
@@ -75,7 +75,8 @@
                               const SkColor colors[], SkXfermode* xmode,
                               const uint16_t indices[], int indexCount,
                               const SkPaint& paint);
-    
+    virtual void drawData(const void* data, size_t length);
+
     virtual SkBounder* setBounder(SkBounder* bounder);
     virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter);