Add SkEncodedInfo to report properties of encoded image data

src/codec/SkIcoCodec.h

 /*
  * 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 "SkImageInfo.h"
 #include "SkStream.h"
@@ skipping 53 matching lines @@
      * @return the index of the matching codec or -1 if there is no
      *         matching codec between startIndex and the end of
      *         the array.
      */
     int chooseCodec(const SkISize& requestedSize, int startIndex);
 
     /*
      * Constructor called by NewFromStream
      * @param embeddedCodecs codecs for the embedded images, takes ownership
      */
-    SkIcoCodec(const SkImageInfo& srcInfo, SkTArray<SkAutoTDelete<SkCodec>, true>* embeddedCodecs);
+    SkIcoCodec(const SkEncodedInfo& info, SkTArray<SkAutoTDelete<SkCodec>, true>* embeddedCodecs);
 
     SkAutoTDelete<SkTArray<SkAutoTDelete<SkCodec>, true>> fEmbeddedCodecs; // owned
 
     // Only used by the scanline decoder.  onStartScanlineDecode() will set
     // fCurrScanlineCodec to one of the fEmbeddedCodecs, if it can find a
     // codec of the appropriate size.  We will use fCurrScanlineCodec for
     // subsequent calls to onGetScanlines() or onSkipScanlines().
     // fCurrScanlineCodec is owned by this class, but should not be an
     // SkAutoTDelete.  It will be deleted by the destructor of fEmbeddedCodecs.
     SkCodec* fCurrScanlineCodec;
 
     typedef SkCodec INHERITED;
 };