WebGL 2: Fix nits when check vertexAttrib type with variable type in vertex shader

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 973b041a7a7024bee6e3e89dec51712bb36c8493..4eae5f8c1f71366f062075287562f125ba3dfc9a 100644
--- a/gpu/command_buffer/service/feature_info.cc
+++ b/gpu/command_buffer/service/feature_info.cc
@@ -1433,10 +1433,10 @@ bool FeatureInfo::IsWebGL2OrES3Context() const {
     case CONTEXT_TYPE_WEBGL1:
     case CONTEXT_TYPE_OPENGLES2:
       return false;
-    default:
-      NOTREACHED();
-      return false;
   }
+
+  NOTREACHED();
+  return false;
 }
 
 void FeatureInfo::AddExtensionString(const char* s) {