Update {virtual,override,final} to follow C++11 style in ui.

ui/gl/gl_context_android.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gl/gl_context.h"
 
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/sys_info.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_context_egl.h"
 #include "ui/gl/gl_context_osmesa.h"
 #include "ui/gl/gl_context_stub.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_surface.h"
 
 namespace gfx {
 
 namespace {
 
 // Used to render into an already current context+surface,
 // that we do not have ownership of (draw callback).
 // TODO(boliu): Make this inherit from GLContextEGL.
 class GLNonOwnedContext : public GLContextReal {
  public:
   GLNonOwnedContext(GLShareGroup* share_group);
 
   // Implement GLContext.
-  virtual bool Initialize(GLSurface* compatible_surface,
-                          GpuPreference gpu_preference) override;
-  virtual void Destroy() override {}
-  virtual bool MakeCurrent(GLSurface* surface) override;
-  virtual void ReleaseCurrent(GLSurface* surface) override {}
-  virtual bool IsCurrent(GLSurface* surface) override { return true; }
-  virtual void* GetHandle() override { return NULL; }
-  virtual void OnSetSwapInterval(int interval) override {}
-  virtual std::string GetExtensions() override;
+  bool Initialize(GLSurface* compatible_surface,
+                  GpuPreference gpu_preference) override;
+  void Destroy() override {}
+  bool MakeCurrent(GLSurface* surface) override;
+  void ReleaseCurrent(GLSurface* surface) override {}
+  bool IsCurrent(GLSurface* surface) override { return true; }
+  void* GetHandle() override { return NULL; }
+  void OnSetSwapInterval(int interval) override {}
+  std::string GetExtensions() override;
 
  protected:
-  virtual ~GLNonOwnedContext() {}
+  ~GLNonOwnedContext() override {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(GLNonOwnedContext);
 
   EGLDisplay display_;
 };
 
 GLNonOwnedContext::GLNonOwnedContext(GLShareGroup* share_group)
   : GLContextReal(share_group), display_(NULL) {}
 
@@ skipping 91 matching lines @@
       // above. Low-end devices use 4444 textures so we can use a lower limit.
       limit_bytes = 8;
     }
     limit_bytes = limit_bytes * 1024 * 1024;
   }
   *bytes = limit_bytes;
   return true;
 }
 
 }