Change SkImageDecoders to take an SkStreamRewindable.

src/images/SkImageRef_ashmem.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 SkImageRef_ashmem_DEFINED
 #define SkImageRef_ashmem_DEFINED
 
 #include "SkImageRef.h"
 
 struct SkAshmemRec {
     int     fFD;
     void*   fAddr;
     size_t  fSize;
     bool    fPinned;
 };
 
 class SkImageRef_ashmem : public SkImageRef {
 public:
-    SkImageRef_ashmem(SkStream*, SkBitmap::Config, int sampleSize = 1);
+    SkImageRef_ashmem(SkStreamRewindable*, SkBitmap::Config, int sampleSize = 1);
     virtual ~SkImageRef_ashmem();
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkImageRef_ashmem)
 
 protected:
     SkImageRef_ashmem(SkFlattenableReadBuffer&);
     virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
 
-    virtual bool onDecode(SkImageDecoder* codec, SkStream* stream,
+    virtual bool onDecode(SkImageDecoder* codec, SkStreamRewindable* stream,
                           SkBitmap* bitmap, SkBitmap::Config config,
                           SkImageDecoder::Mode mode);
 
     virtual void* onLockPixels(SkColorTable**);
     virtual void onUnlockPixels();
 
 private:
     void closeFD();
 
     SkColorTable* fCT;
     SkAshmemRec fRec;
 
     typedef SkImageRef INHERITED;
 };
 
 #endif