Add hooks for GL_EXT_debug_marker in gpu

src/gpu/gl/GrGLNoOpInterface.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrGLNoOpInterface.h"
 #include "SkString.h"
 #include "SkThread.h"
@@ skipping 638 matching lines @@
                                                           GrGLint* params) {
     // we used to use this to query stuff about externally created textures,
     // now we just require clients to tell us everything about the texture.
     GrCrash("Should never query texture parameters.");
 }
 
 GrGLint GR_GL_FUNCTION_TYPE noOpGLGetUniformLocation(GrGLuint program, const char* name) {
     static int gUniLocation = 0;
     return ++gUniLocation;
 }
+
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLInsertEventMarker(GrGLsizei length, const char* marker) {
+}
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLPushGroupMarker(GrGLsizei length  , const char* marker) {
+}
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLPopGroupMarker() {
+}