Update callsites to new SkColorSpace API, delete legacy flag

third_party/WebKit/Source/platform/image-decoders/png/PNGImageDecoder.cpp

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  *
  * Portions are Copyright (C) 2001 mozilla.org
  *
  * Other contributors:
  *   Stuart Parmenter <stuart@mozilla.com>
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 42 matching lines @@
       m_offset(offset) {}
 
 PNGImageDecoder::~PNGImageDecoder() {}
 
 inline float pngFixedToFloat(png_fixed_point x) {
   return ((float)x) * 0.00001f;
 }
 
 inline sk_sp<SkColorSpace> readColorSpace(png_structp png, png_infop info) {
   if (png_get_valid(png, info, PNG_INFO_sRGB)) {
-    return SkColorSpace::MakeNamed(SkColorSpace::kSRGB_Named);
+    return SkColorSpace::MakeSRGB();
   }
 
   png_charp name = nullptr;
   int compression = 0;
   png_bytep profile = nullptr;
   png_uint_32 length = 0;
   if (png_get_iCCP(png, info, &name, &compression, &profile, &length)) {
     return SkColorSpace::MakeICC(profile, length);
   }
 
@@ skipping 307 matching lines @@
   // has failed.
   if (!m_reader->decode(*m_data, onlySize) && isAllDataReceived())
     setFailed();
 
   // If decoding is done or failed, we don't need the PNGImageReader anymore.
   if (isComplete(this) || failed())
     m_reader.reset();
 }
 
 }  // namespace blink