Add serialization of SkBitmapSource's new filterQuality member variable

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"
@@ skipping 14 matching lines @@
                                const SkRect& srcRect, const SkRect& dstRect,
                                SkFilterQuality filterQuality)
   : INHERITED(0, 0)
   , fBitmap(bitmap)
   , fSrcRect(srcRect)
   , fDstRect(dstRect)
   , fFilterQuality(filterQuality) {
 }
 
 SkFlattenable* SkBitmapSource::CreateProc(SkReadBuffer& buffer) {
+    SkFilterQuality filterQuality;
+    if (buffer.isVersionLT(SkReadBuffer::kBitmapourceFilterQuality_Version)) {
+        filterQuality = kHigh_SkFilterQuality;
+    } else {
+        filterQuality = (SkFilterQuality)buffer.readInt();
+    }
     SkRect src, dst;
     buffer.readRect(&src);
     buffer.readRect(&dst);
     SkBitmap bitmap;
     if (!buffer.readBitmap(&bitmap)) {
         return NULL;
     }
-    return SkBitmapSource::Create(bitmap, src, dst);
+    return SkBitmapSource::Create(bitmap, src, dst, filterQuality);
 }
 
 void SkBitmapSource::flatten(SkWriteBuffer& buffer) const {
+    buffer.writeInt(fFilterQuality);
     buffer.writeRect(fSrcRect);
     buffer.writeRect(fDstRect);
     buffer.writeBitmap(fBitmap);
 }
 
 bool SkBitmapSource::onFilterImage(Proxy* proxy, const SkBitmap&, const Context& ctx,
                                    SkBitmap* result, SkIPoint* offset) const {
     SkRect bounds, dstRect;
     fBitmap.getBounds(&bounds);
     ctx.ctm().mapRect(&dstRect, fDstRect);
@@ skipping 38 matching lines @@
 void SkBitmapSource::toString(SkString* str) const {
     str->appendf("SkBitmapSource: (");
     str->appendf("src: (%f,%f,%f,%f) dst: (%f,%f,%f,%f) ",
                  fSrcRect.fLeft, fSrcRect.fTop, fSrcRect.fRight, fSrcRect.fBottom,
                  fDstRect.fLeft, fDstRect.fTop, fDstRect.fRight, fDstRect.fBottom);
     str->appendf("bitmap: (%d,%d)",
                  fBitmap.width(), fBitmap.height());
     str->append(")");
 }
 #endif