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

src/image/SkImage_Codec.cpp

Index: src/image/SkImage_Codec.cpp
diff --git a/src/image/SkImage_Codec.cpp b/src/image/SkImage_Codec.cpp
index 61661de3569f86b4faf479ad43fb17219468d29c..b9a8990838fa8c587c26b7005ddb46d2250586cf 100644
--- a/src/image/SkImage_Codec.cpp
+++ b/src/image/SkImage_Codec.cpp
@@ -19,6 +19,7 @@ public:
     virtual ~SkImage_Codec();
 
     virtual void onDraw(SkCanvas*, SkScalar, SkScalar, const SkPaint*) SK_OVERRIDE;
+    virtual void onDrawRectToRect(SkCanvas*, const SkRect*, const SkRect&, const SkPaint*) SK_OVERRIDE;
 
 private:
     SkData*     fEncodedData;
@@ -48,6 +49,17 @@ void SkImage_Codec::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y, const SkPai
     canvas->drawBitmap(fBitmap, x, y, paint);
 }
 
+void SkImage_Codec::onDrawRectToRect(SkCanvas* canvas, const SkRect* src, 
+                                     const SkRect& dst, const SkPaint* paint) {
+    if (!fBitmap.pixelRef()) {
+        if (!SkImageDecoder::DecodeMemory(fEncodedData->bytes(), fEncodedData->size(),
+                                          &fBitmap)) {
+            return;
+        }
+    }
+    canvas->drawBitmapRectToRect(fBitmap, src, dst, paint);
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 SkImage* SkImage::NewEncodedData(SkData* data) {