Make AndroidOptions const

src/codec/SkSampledCodec.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCodec.h"
 #include "SkCodecPriv.h"
 #include "SkMath.h"
@@ skipping 52 matching lines @@
     return preSampledSize;
 }
 
 SkISize SkSampledCodec::onGetSampledDimensions(int sampleSize) const {
     const SkISize size = this->accountForNativeScaling(&sampleSize);
     return SkISize::Make(get_scaled_dimension(size.width(), sampleSize),
                          get_scaled_dimension(size.height(), sampleSize));
 }
 
 SkCodec::Result SkSampledCodec::onGetAndroidPixels(const SkImageInfo& info, void* pixels,
-        size_t rowBytes, AndroidOptions& options) {
+        size_t rowBytes, const AndroidOptions& options) {
     // Create an Options struct for the codec.
     SkCodec::Options codecOptions;
     codecOptions.fZeroInitialized = options.fZeroInitialized;
 
     SkIRect* subset = options.fSubset;
     if (!subset || subset->size() == fCodec->getInfo().dimensions()) {
         if (fCodec->dimensionsSupported(info.dimensions())) {
             return fCodec->getPixels(info, pixels, rowBytes, &codecOptions, options.fColorPtr,
                     options.fColorCount);
         }
@@ skipping 44 matching lines @@
             return SkCodec::kSuccess;
         }
         default:
             SkASSERT(false);
             return SkCodec::kUnimplemented;
     }
 }
 
 
 SkCodec::Result SkSampledCodec::sampledDecode(const SkImageInfo& info, void* pixels,
-        size_t rowBytes, AndroidOptions& options) {
+        size_t rowBytes, const AndroidOptions& options) {
     // We should only call this function when sampling.
     SkASSERT(options.fSampleSize > 1);
 
     // Create options struct for the codec.
     SkCodec::Options sampledOptions;
     sampledOptions.fZeroInitialized = options.fZeroInitialized;
 
     // FIXME: This was already called by onGetAndroidPixels. Can we reduce that?
     int sampleSize = options.fSampleSize;
     int nativeSampleSize;
@@ skipping 98 matching lines @@
                 // fCodec has already handled filling uninitialized memory.
                 return SkCodec::kIncompleteInput;
             }
             return SkCodec::kSuccess;
         }
         default:
             SkASSERT(false);
             return SkCodec::kUnimplemented;
     }
 }