Add initial support for NV_path_rendering extension to gpu command buffer

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 2804c3c6bb170d457405c1741e107e80d174acfa..617bb7fd3274eec3ffdb4b4a1af386aae270c889 100644
--- a/gpu/command_buffer/service/feature_info.cc
+++ b/gpu/command_buffer/service/feature_info.cc
@@ -134,7 +134,8 @@ FeatureInfo::FeatureFlags::FeatureFlags()
       is_angle(false),
       is_swiftshader(false),
       angle_texture_usage(false),
-      ext_texture_storage(false) {
+      ext_texture_storage(false),
+      nv_path_rendering(false) {
 }
 
 FeatureInfo::Workarounds::Workarounds() :
@@ -776,6 +777,12 @@ void FeatureInfo::InitializeFeatures() {
     AddExtensionString("GL_EXT_discard_framebuffer");
     feature_flags_.ext_discard_framebuffer = true;
   }
+
+  if (extensions.Contains("GL_NV_path_rendering")) {
+    AddExtensionString("GL_CHROMIUM_NV_path_rendering");

[piman, 2014/04/11 22:19:27]

nit: GL_CHROMIUM_path_rendering

[Kimmo Kinnunen, 2014/04/15 16:16:58]

Done.

+    feature_flags_.nv_path_rendering = true;
+    validators_.g_l_state.AddValue(GL_MATRIX_MODE);
+  }
 }
 
 void FeatureInfo::AddExtensionString(const std::string& str) {