Add SkImage->draw() call with src and dst rects.

src/image/SkImage.cpp

Index: src/image/SkImage.cpp
diff --git a/src/image/SkImage.cpp b/src/image/SkImage.cpp
index 9c60f55aa749cfbade31164b4222c3f7f75ebc6f..39fd93acc66e7e743145b342157b8267a0a9fcde 100644
--- a/src/image/SkImage.cpp
+++ b/src/image/SkImage.cpp
@@ -36,6 +36,11 @@ void SkImage::draw(SkCanvas* canvas, SkScalar x, SkScalar y,
     as_IB(this)->onDraw(canvas, x, y, paint);
 }
 
+void SkImage::draw(SkCanvas* canvas, const SkRect* src, const SkRect& dst,
+                   const SkPaint* paint) {
+    as_IB(this)->onDrawRectToRect(canvas, src, dst, paint);
+}
+
 GrTexture* SkImage::getTexture() {
     return as_IB(this)->onGetTexture();
 }