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 e58e6c21fc7b0afaa76c230f716566c9907120cf..de3eb5623ef77375cdcb2cb5091abb0413f575e4 100644
--- a/gpu/command_buffer/service/feature_info.cc
+++ b/gpu/command_buffer/service/feature_info.cc
@@ -141,7 +141,8 @@ FeatureInfo::FeatureFlags::FeatureFlags()
       is_angle(false),
       is_swiftshader(false),
       angle_texture_usage(false),
-      ext_texture_storage(false) {
+      ext_texture_storage(false),
+      chromium_path_rendering(false) {
 }
 
 FeatureInfo::Workarounds::Workarounds() :
@@ -831,6 +832,15 @@ void FeatureInfo::InitializeFeatures() {
     AddExtensionString("GL_CHROMIUM_sync_query");
     feature_flags_.chromium_sync_query = true;
   }
+
+  if (extensions.Contains("GL_NV_path_rendering")) {
+    if (extensions.Contains("GL_EXT_direct_state_access") || is_es3) {
+      AddExtensionString("GL_CHROMIUM_path_rendering");
+      feature_flags_.chromium_path_rendering = true;
+      validators_.g_l_state.AddValue(GL_PATH_MODELVIEW_MATRIX_CHROMIUM);
+      validators_.g_l_state.AddValue(GL_PATH_PROJECTION_MATRIX_CHROMIUM);
+    }
+  }
 }
 
 void FeatureInfo::AddExtensionString(const std::string& str) {