rename sk_gpu_test::GLContext to sk_gpu_test::GLTestContext

tools/gpu/gl/mesa/GLTestContext_mesa.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
-#ifndef GLContext_mesa_DEFINED
-#define GLContext_mesa_DEFINED
+#ifndef GLTestContext_mesa_DEFINED
+#define GLTestContext_mesa_DEFINED
 
-#include "gl/GLContext.h"
+#include "gl/GLTestContext.h"
 
 namespace sk_gpu_test {
-GLContext* CreateMesaGLContext();
+GLTestContext* CreateMesaGLTestContext();
 }  // namespace sk_gpu_test
 
 #endif