Remove SkBitmapHeap and SkBitmapHeapReader. They're unused.

src/core/SkReadBuffer.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkReadBuffer_DEFINED
 #define SkReadBuffer_DEFINED
 
-#include "SkBitmapHeap.h"
 #include "SkColorFilter.h"
 #include "SkData.h"
 #include "SkDrawLooper.h"
 #include "SkImageFilter.h"
 #include "SkMaskFilter.h"
 #include "SkPath.h"
 #include "SkPathEffect.h"
 #include "SkPicture.h"
 #include "SkRasterizer.h"
 #include "SkReadBuffer.h"
@@ skipping 147 matching lines @@
     /**
      *  Returns false if the bitmap could not be completely read. In that case, it will be set
      *  to have width/height, but no pixels.
      */
     bool readBitmap(SkBitmap* bitmap);
 
     SkImage* readImage();
 
     virtual SkTypeface* readTypeface();
 
-    void setBitmapStorage(SkBitmapHeapReader* bitmapStorage) {
-        SkRefCnt_SafeAssign(fBitmapStorage, bitmapStorage);
-    }
-
     void setTypefaceArray(SkTypeface* array[], int count) {
         fTFArray = array;
         fTFCount = count;
     }
 
     /**
      *  Call this with a pre-loaded array of Factories, in the same order as
      *  were created/written by the writer. SkPicture uses this.
      */
     void setFactoryPlayback(SkFlattenable::Factory array[], int count) {
@@ skipping 55 matching lines @@
     SkTHashMap<uint32_t, SkString> fFlattenableDict;
 
 private:
     bool readArray(void* value, size_t size, size_t elementSize);
 
     uint32_t fFlags;
     int fVersion;
 
     void* fMemoryPtr;
 
-    SkBitmapHeapReader* fBitmapStorage;
     SkTypeface** fTFArray;
     int        fTFCount;
 
     SkFlattenable::Factory* fFactoryArray;
     int                     fFactoryCount;
 
     // Only used if we do not have an fFactoryArray.
     SkTHashMap<SkString, SkFlattenable::Factory> fCustomFactory;
 
     SkPicture::InstallPixelRefProc fBitmapDecoder;
 
 #ifdef DEBUG_NON_DETERMINISTIC_ASSERT
     // Debugging counter to keep track of how many bitmaps we
     // have decoded.
     int fDecodedBitmapIndex;
 #endif // DEBUG_NON_DETERMINISTIC_ASSERT
 };
 
 #endif // SkReadBuffer_DEFINED