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..24720cd158a0fa24feff0f6a27a89fe8c16ed11e 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 onDraw(SkCanvas*, SkRect, SkRect, const SkPaint*) SK_OVERRIDE;
 
 private:
     SkData*     fEncodedData;
@@ -48,6 +49,16 @@ void SkImage_Codec::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y, const SkPai
     canvas->drawBitmap(fBitmap, x, y, paint);
 }
 
+void SkImage_Codec::onDraw(SkCanvas* canvas, SkRect src, SkRect dst, const SkPaint* paint) {

[Justin Novosad, 2013/07/18 21:54:37]

Test or leave unimplemented

+    if (!fBitmap.pixelRef()) {
+        if (!SkImageDecoder::DecodeMemory(fEncodedData->bytes(), fEncodedData->size(),
+                                          &fBitmap)) {
+            return;
+        }
+    }
+    canvas->drawBitmapRectToRect(fBitmap, &src, dst, paint);
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 SkImage* SkImage::NewEncodedData(SkData* data) {