correctly plumb through explicit rowbytes for allocPixels

src/core/SkMallocPixelRef.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkMallocPixelRef.h"
 #include "SkBitmap.h"
 #include "SkReadBuffer.h"
@@ skipping 222 matching lines @@
         fCTable = SkNEW_ARGS(SkColorTable, (buffer));
     } else {
         fCTable = NULL;
     }
 
     this->setPreLocked(fStorage, fRB, fCTable);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
-SkPixelRef* SkMallocPixelRef::PRFactory::create(const SkImageInfo& info,
+SkPixelRef* SkMallocPixelRef::PRFactory::create(const SkImageInfo& info, size_t rowBytes,
                                                 SkColorTable* ctable) {
-    return SkMallocPixelRef::NewAllocate(info, info.minRowBytes(), ctable);
+    return SkMallocPixelRef::NewAllocate(info, rowBytes, ctable);
 }