Fix MSAA on windows

gpu/command_buffer/service/feature_info.cc

 // Copyright (c) 2012 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 "gpu/command_buffer/service/feature_info.h"
 
 #include <set>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 453 matching lines @@
   bool enable_immutable_texture_format_bgra_on_es3 =
       extensions.Contains("GL_APPLE_texture_format_BGRA8888");
 
   // Check if we should allow GL_EXT_texture_format_BGRA8888
   if (extensions.Contains("GL_EXT_texture_format_BGRA8888") ||
       enable_immutable_texture_format_bgra_on_es3 ||
       extensions.Contains("GL_EXT_bgra")) {
     enable_texture_format_bgra8888 = true;
   }
 
-  if (extensions.Contains("GL_EXT_bgra")) {
+  if (extensions.Contains("GL_EXT_texture_format_BGRA8888")) {

[Ken Russell (switch to Gerrit), 2015/02/21 01:22:28]

Something looks wrong with this change. GL_EXT_texure_format_BGRA8888 is an
OpenGL ES-only extension, meaning that it will probably be exposed on Android
devices and via ANGLE, but not on Linux or Mac OS. This means that this code
path will not be taken on Linux or Mac any more.

I think you need more careful review of this and the dependent code paths.
Sorry, but I'm Blink gardener today and can't study this in depth until Monday.

     enable_render_buffer_bgra = true;
   }
 
   if (extensions.Contains("GL_EXT_read_format_bgra") ||
       extensions.Contains("GL_EXT_bgra")) {
     enable_read_format_bgra = true;
   }
 
   if (enable_texture_format_bgra8888) {
     feature_flags_.ext_texture_format_bgra8888 = true;
@@ skipping 559 matching lines @@
   if (pos == std::string::npos) {
     extensions_ += (extensions_.empty() ? "" : " ") + str;
   }
 }
 
 FeatureInfo::~FeatureInfo() {
 }
 
 }  // namespace gles2
 }  // namespace gpu