Small DM cleanup

dm/DMSrcSink.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "DMSrcSink.h"
 #include "SamplePipeControllers.h"
 #include "SkCodec.h"
@@ skipping 423 matching lines @@
                     switch (skipResult) {
                         case SkCodec::kSuccess:
                         case SkCodec::kIncompleteInput:
                             break;
                         default:
                             return SkStringPrintf("%s failed after attempting to skip %d scanlines"
                                     "with error message %d", fPath.c_str(), y, (int) skipResult);
                     }
                     //create and set size of subsetBm
                     SkBitmap subsetBm;
-                    SkIRect bounds = SkIRect::MakeWH(subsetWidth, subsetHeight);
-                    bounds.setXYWH(0, 0, currentSubsetWidth, currentSubsetHeight);
+                    SkIRect bounds = SkIRect::MakeWH(currentSubsetWidth, currentSubsetHeight);
                     SkAssertResult(largestSubsetBm.extractSubset(&subsetBm, bounds));
                     SkAutoLockPixels autlockSubsetBm(subsetBm, true);
                     const SkCodec::Result subsetResult =
                             codec->getScanlines(buffer, currentSubsetHeight, rowBytes);
                     switch (subsetResult) {
                         case SkCodec::kSuccess:
                         case SkCodec::kIncompleteInput:
                             break;
                         default:
                             return SkStringPrintf("%s failed with error message %d",
@@ skipping 799 matching lines @@
             skr.visit<void>(i, drawsAsSingletonPictures);
         }
         SkAutoTUnref<SkPicture> macroPic(macroRec.endRecordingAsPicture());
 
         canvas->drawPicture(macroPic);
         return "";
     });
 }
 
 }  // namespace DM