flag to use const& instead of const* for src-rect

tests/RecordDrawTest.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Test.h"
 #include "RecordTestUtils.h"
 
@@ skipping 307 matching lines @@
         SkRecorder recorder(&record, 10, 10);
         recorder.drawImage(image, 0, 0);
         SkRecordDraw(record, &canvas, NULL, NULL, 0, NULL, 0);
     }
     REPORTER_ASSERT(r, canvas.fDrawImageCalled);
     canvas.resetTestValues();
 
     {
         SkRecord record;
         SkRecorder recorder(&record, 10, 10);
-        recorder.drawImageRect(image, 0, SkRect::MakeWH(10, 10));
+        recorder.drawImageRect(image, SkRect::MakeWH(10, 10), nullptr);
         SkRecordDraw(record, &canvas, NULL, NULL, 0, NULL, 0);
     }
     REPORTER_ASSERT(r, canvas.fDrawImageRectCalled);
 
 }