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

remoting/host/input_injector_win.cc

Index: remoting/host/input_injector_win.cc
diff --git a/remoting/host/input_injector_win.cc b/remoting/host/input_injector_win.cc
index 37f628ac33bbf53044652910d5f49994dafdd750..58f694e5ed99fdf7441ba80dce2b72405d5b0c97 100644
--- a/remoting/host/input_injector_win.cc
+++ b/remoting/host/input_injector_win.cc
@@ -59,19 +59,19 @@ class InputInjectorWin : public InputInjector {
  public:
   InputInjectorWin(scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
                    scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner);
-  virtual ~InputInjectorWin();
+  ~InputInjectorWin() override;
 
   // ClipboardStub interface.
-  virtual void InjectClipboardEvent(const ClipboardEvent& event) override;
+  void InjectClipboardEvent(const ClipboardEvent& event) override;
 
   // InputStub interface.
-  virtual void InjectKeyEvent(const KeyEvent& event) override;
-  virtual void InjectTextEvent(const TextEvent& event) override;
-  virtual void InjectMouseEvent(const MouseEvent& event) override;
-  virtual void InjectTouchEvent(const TouchEvent& event) override;
+  void InjectKeyEvent(const KeyEvent& event) override;
+  void InjectTextEvent(const TextEvent& event) override;
+  void InjectMouseEvent(const MouseEvent& event) override;
+  void InjectTouchEvent(const TouchEvent& event) override;
 
   // InputInjector interface.
-  virtual void Start(
+  void Start(
       scoped_ptr<protocol::ClipboardStub> client_clipboard) override;
 
  private: