Refactor read and write buffers.

src/effects/SkMergeImageFilter.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 "SkMergeImageFilter.h"
 #include "SkCanvas.h"
 #include "SkDevice.h"
-#include "SkFlattenableBuffers.h"
+#include "SkReadBuffer.h"
+#include "SkWriteBuffer.h"
 #include "SkValidationUtils.h"
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void SkMergeImageFilter::initAllocModes() {
     int inputCount = countInputs();
     if (inputCount) {
         size_t size = sizeof(uint8_t) * inputCount;
         if (size <= sizeof(fStorage)) {
             fModes = SkTCast<uint8_t*>(fStorage);
@@ skipping 119 matching lines @@
         }
         canvas.drawSprite(*srcPtr, pos.x() - x0, pos.y() - y0, &paint);
     }
 
     offset->fX = bounds.left();
     offset->fY = bounds.top();
     *result = dst->accessBitmap(false);
     return true;
 }
 
-void SkMergeImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const {
+void SkMergeImageFilter::flatten(SkWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
 
     buffer.writeBool(fModes != NULL);
     if (fModes) {
         buffer.writeByteArray(fModes, countInputs() * sizeof(fModes[0]));
     }
 }
 
-SkMergeImageFilter::SkMergeImageFilter(SkFlattenableReadBuffer& buffer)
+SkMergeImageFilter::SkMergeImageFilter(SkReadBuffer& buffer)
   : INHERITED(-1, buffer) {
     bool hasModes = buffer.readBool();
     if (hasModes) {
         this->initAllocModes();
         int nbInputs = countInputs();
         size_t size = nbInputs * sizeof(fModes[0]);
         SkASSERT(buffer.getArrayCount() == size);
         if (buffer.validate(buffer.getArrayCount() == size) &&
             buffer.readByteArray(fModes, size)) {
             for (int i = 0; i < nbInputs; ++i) {
                 buffer.validate(SkIsValidMode((SkXfermode::Mode)fModes[i]));
             }
         }
     } else {
         fModes = 0;
     }
 }