Fix up all the easy virtual ... SK_OVERRIDE cases.

src/gpu/gl/mac/SkCreatePlatformGLContext_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/SkGLContext.h"
 #include "AvailabilityMacros.h"
 
 #include <OpenGL/OpenGL.h>
 
 namespace {
 class MacGLContext : public SkGLContext {
 public:
     MacGLContext();
-    virtual ~MacGLContext() SK_OVERRIDE;
-    virtual void makeCurrent() const SK_OVERRIDE;
-    virtual void swapBuffers() const SK_OVERRIDE;
+    ~MacGLContext() SK_OVERRIDE;
+    void makeCurrent() const SK_OVERRIDE;
+    void swapBuffers() const SK_OVERRIDE;
 
 private:
     void destroyGLContext();
 
     CGLContextObj fContext;
 };
 
 MacGLContext::MacGLContext()
     : fContext(NULL) {
     CGLPixelFormatAttribute attributes[] = {
@@ skipping 62 matching lines @@
     if (kGLES_GrGLStandard == forcedGpuAPI) {
         return NULL;
     }
     MacGLContext* ctx = SkNEW(MacGLContext);
     if (!ctx->isValid()) {
         SkDELETE(ctx);
         return NULL;
     }
     return ctx;
 }