Add strings to debug/null interfaces glGetString
Review URL: http://codereview.appspot.com/6294062/



git-svn-id: http://skia.googlecode.com/svn/trunk@4263 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/GrGLCreateNullInterface.cpp b/src/gpu/gl/GrGLCreateNullInterface.cpp
index bd8ceaa..b9a3c5e 100644
--- a/src/gpu/gl/GrGLCreateNullInterface.cpp
+++ b/src/gpu/gl/GrGLCreateNullInterface.cpp
@@ -360,6 +360,10 @@
             return (const GrGLubyte*)"4.0 Null GL";
         case GR_GL_SHADING_LANGUAGE_VERSION:
             return (const GrGLubyte*)"4.20.8 Null GLSL";
+        case GR_GL_VENDOR:
+            return (const GrGLubyte*)"Null Vendor";
+        case GR_GL_RENDERER:
+            return (const GrGLubyte*)"The Null (Non-)Renderer";
         default:
             GrCrash("Unexpected name to GetString");
             return NULL;