Reland: Add ETC1 powered SSE encoder for tile texture compression

cc/resources/texture_compressor.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/resources/texture_compressor.h"
 
 #include "base/logging.h"
 #include "cc/resources/texture_compressor_etc1.h"
+#include "cc/resources/texture_compressor_etc1_sse.h"
 
 namespace cc {
 
 scoped_ptr<TextureCompressor> TextureCompressor::Create(Format format) {
   switch (format) {
     case kFormatETC1:
       return make_scoped_ptr(new TextureCompressorETC1());
   }

[robert.bradford, 2015/04/17 14:04:47]

Looks like you're missing instantiating your new class.

Use the methods in base/cpu.h to work out when to use that new class.

 
   NOTREACHED();
   return nullptr;
 }
 
 }  // namespace cc