Revert "Serialization of SkPictureImageFilter"

src/image/SkImage.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkImagePriv.h"
@@ skipping 37 matching lines @@
     if (NULL == rowBytes) {
         rowBytes = &rowBytesStorage;
     }
     return as_IB(this)->onPeekPixels(info, rowBytes);
 }
 
 bool SkImage::readPixels(SkBitmap* bitmap, const SkIRect* subset) const {
     if (NULL == bitmap) {
         return false;
     }
-
+    
     SkIRect bounds = SkIRect::MakeWH(this->width(), this->height());
 
     // trim against the bitmap, if its already been allocated
     if (bitmap->pixelRef()) {
         bounds.fRight = SkMin32(bounds.fRight, bitmap->width());
         bounds.fBottom = SkMin32(bounds.fBottom, bitmap->height());
         if (bounds.isEmpty()) {
             return false;
         }
     }
@@ skipping 50 matching lines @@
         if (!tmp.allocPixels(info)) {
             return false;
         }
         *bitmap = tmp;
     }
 
     SkRect srcR, dstR;
     srcR.set(subset);
     dstR = srcR;
     dstR.offset(-dstR.left(), -dstR.top());
-
+    
     SkCanvas canvas(*bitmap);
 
     SkPaint paint;
     paint.setXfermodeMode(SkXfermode::kClear_Mode);
     canvas.drawRect(dstR, paint);
 
     const_cast<SkImage_Base*>(this)->onDrawRectToRect(&canvas, &srcR, dstR, NULL);
     return true;
 }
+