Add hooks for GL_EXT_debug_marker in gpu

src/gpu/gl/mac/GrGLCreateNativeInterface_mac.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "gl/GrGLInterface.h"
@@ skipping 223 matching lines @@
         }
         if (extensions.has("GL_EXT_framebuffer_blit")) {
             GET_PROC_SUFFIX(BlitFramebuffer, EXT);
         }
     }
     if (ver >= GR_GL_VER(3,3) || extensions.has("GL_ARB_blend_func_extended")) {
         // ARB extension doesn't use the ARB suffix on the function name
         GET_PROC(BindFragDataLocationIndexed);
     }
 
+    if (extensions.has("GL_EXT_debug_marker")) {
+        GET_PROC_SUFFIX(InsertEventMarker, EXT);
+        GET_PROC_SUFFIX(PushGroupMarker, EXT);
+        GET_PROC_SUFFIX(PopGroupMarker, EXT);
+    }
+
     interface->fExtensions.swap(&extensions);
     return interface;
 }