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

src/image/SkImage.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkImagePriv.h"
@@ skipping 18 matching lines @@
         id = sk_atomic_inc(&gUniqueID) + 1;
     } while (0 == id);
     return id;
 }
 
 void SkImage::draw(SkCanvas* canvas, SkScalar x, SkScalar y,
                    const SkPaint* paint) {
     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();
 }
 
 SkData* SkImage::encode(SkImageEncoder::Type type, int quality) const {
     SkBitmap bm;
     if (as_IB(this)->getROPixels(&bm)) {
         return SkImageEncoder::EncodeData(bm, type, quality);
     }
     return NULL;
 }