Revert of Remove SK_SUPPORT_LEGACY_DEEPFLATTENING.

src/effects/SkBitmapSource.cpp

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmapSource.h"
 #include "SkDevice.h"
 #include "SkCanvas.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
 #include "SkValidationUtils.h"
 
 SkBitmapSource::SkBitmapSource(const SkBitmap& bitmap)
   : INHERITED(0, 0)
   , fBitmap(bitmap)
   , fSrcRect(SkRect::MakeWH(SkIntToScalar(bitmap.width()),
                             SkIntToScalar(bitmap.height())))
   , fDstRect(fSrcRect)
 {}
 
 SkBitmapSource::SkBitmapSource(const SkBitmap& bitmap, const SkRect& srcRect, const SkRect& dstRect)
   : INHERITED(0, 0)
   , fBitmap(bitmap)
   , fSrcRect(srcRect)
   , fDstRect(dstRect) {}
 
+#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
+SkBitmapSource::SkBitmapSource(SkReadBuffer& buffer) : INHERITED(0, buffer) {
+    buffer.readBitmap(&fBitmap);
+    buffer.readRect(&fSrcRect);
+    buffer.readRect(&fDstRect);
+    buffer.validate(buffer.isValid() && SkIsValidRect(fSrcRect) && SkIsValidRect(fDstRect));
+}
+#endif
+
 SkFlattenable* SkBitmapSource::CreateProc(SkReadBuffer& buffer) {
     SkRect src, dst;
     buffer.readRect(&src);
     buffer.readRect(&dst);
     SkBitmap bitmap;
     if (!buffer.readBitmap(&bitmap)) {
         return NULL;
     }
     return SkBitmapSource::Create(bitmap, src, dst);
 }
@@ skipping 37 matching lines @@
 
     *result = device.get()->accessBitmap(false);
     offset->fX = dstIRect.fLeft;
     offset->fY = dstIRect.fTop;
     return true;
 }
 
 void SkBitmapSource::computeFastBounds(const SkRect&, SkRect* dst) const {
     *dst = fDstRect;
 }