add src-rect-constraint to drawImageRect

src/core/SkBitmapDevice.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmapDevice.h"
 #include "SkConfig8888.h"
 #include "SkDraw.h"
@@ skipping 219 matching lines @@
     draw.drawPath(path, paint, prePathMatrix, pathIsMutable);
 }
 
 void SkBitmapDevice::drawBitmap(const SkDraw& draw, const SkBitmap& bitmap,
                                 const SkMatrix& matrix, const SkPaint& paint) {
     draw.drawBitmap(bitmap, matrix, NULL, paint);
 }
 
 void SkBitmapDevice::drawBitmapRect(const SkDraw& draw, const SkBitmap& bitmap,
                                     const SkRect* src, const SkRect& dst,
-                                    const SkPaint& paint,
-                                    SkCanvas::DrawBitmapRectFlags flags) {
+                                    const SkPaint& paint, SK_VIRTUAL_CONSTRAINT_TYPE) {
     SkMatrix    matrix;
     SkRect      bitmapBounds, tmpSrc, tmpDst;
     SkBitmap    tmpBitmap;
 
     bitmapBounds.isetWH(bitmap.width(), bitmap.height());
 
     // Compute matrix from the two rectangles
     if (src) {
         tmpSrc = *src;
     } else {
@@ skipping 123 matching lines @@
         paint.getRasterizer() ||
         paint.getPathEffect() ||
         paint.isFakeBoldText() ||
         paint.getStyle() != SkPaint::kFill_Style ||
         !SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrcOver_Mode))
     {
         return true;
     }
     return false;
 }