Fix MSAA on windows

gpu/command_buffer/service/feature_info.cc

Index: gpu/command_buffer/service/feature_info.cc
diff --git a/gpu/command_buffer/service/feature_info.cc b/gpu/command_buffer/service/feature_info.cc
index 803b1210b8e55c96764869810a5ddc7a5e9130a3..8326001135734948dd9a508a41bfb8e6d319d26a 100644
--- a/gpu/command_buffer/service/feature_info.cc
+++ b/gpu/command_buffer/service/feature_info.cc
@@ -471,7 +471,7 @@ void FeatureInfo::InitializeFeatures() {
     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;
   }