Add SkEncodedInfo to report properties of encoded image data

src/codec/SkIcoCodec.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 "SkBmpCodec.h"
 #include "SkCodecPriv.h"
 #include "SkColorPriv.h"
@@ skipping 150 matching lines @@
     uint32_t maxSize = 0;
     uint32_t maxIndex = 0;
     for (int32_t i = 0; i < codecs->count(); i++) {
         SkImageInfo info = codecs->operator[](i)->getInfo();
         uint32_t size = info.width() * info.height();
         if (size > maxSize) {
             maxSize = size;
             maxIndex = i;
         }
     }
-    SkImageInfo info = codecs->operator[](maxIndex)->getInfo();
+    SkEncodedInfo info = codecs->operator[](maxIndex)->getEncodedInfo();
 
     // Note that stream is owned by the embedded codec, the ico does not need
     // direct access to the stream.
     return new SkIcoCodec(info, codecs.release());
 }
 
 /*
  * Creates an instance of the decoder
  * Called only by NewFromStream
  */
-SkIcoCodec::SkIcoCodec(const SkImageInfo& info,
+SkIcoCodec::SkIcoCodec(const SkEncodedInfo& info,
                        SkTArray<SkAutoTDelete<SkCodec>, true>* codecs)
     : INHERITED(info, nullptr)
     , fEmbeddedCodecs(codecs)
     , fCurrScanlineCodec(nullptr)
 {}
 
 /*
  * Chooses the best dimensions given the desired scale
  */
 SkISize SkIcoCodec::onGetScaledDimensions(float desiredScale) const { 
@@ skipping 117 matching lines @@
 SkCodec::SkScanlineOrder SkIcoCodec::onGetScanlineOrder() const {
     // FIXME: This function will possibly return the wrong value if it is called
     //        before startScanlineDecode().
     return fCurrScanlineCodec ? fCurrScanlineCodec->getScanlineOrder() :
             INHERITED::onGetScanlineOrder();
 }
 
 SkSampler* SkIcoCodec::getSampler(bool createIfNecessary) {
     return fCurrScanlineCodec ? fCurrScanlineCodec->getSampler(createIfNecessary) : nullptr;
 }