Some fixes around GrContext::abandonContext:

src/gpu/gl/debug/SkDebugGLContext.cpp

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gl/SkDebugGLContext.h"
 
 const GrGLInterface* SkDebugGLContext::createGLContext(GrGLStandard forcedGpuAPI) {
     if (kGLES_GrGLStandard == forcedGpuAPI) {
         return NULL;
     }
 
     return GrGLCreateDebugInterface();
-};
+}