Apply automated fixits for Chrome clang plugin to ash.

Working on trimming down plugin warnings on the Windows clang build.

BUG=467287
TBR=oshima

Review URL: https://codereview.chromium.org/1110843003

Cr-Commit-Position: refs/heads/master@{#327565}

ash/host/ash_window_tree_host_win.cc

@@ -68,7 +68,8 @@ class AshWindowTreeHostWin : public AshWindowTreeHost,
   }
   bool ConfineCursorToRootWindow() override { return false; }
   void UnConfineCursor() override { NOTIMPLEMENTED(); }
-  void SetRootWindowTransformer(scoped_ptr<RootWindowTransformer> transformer) {
+  void SetRootWindowTransformer(
+      scoped_ptr<RootWindowTransformer> transformer) override {
     transformer_helper_.SetRootWindowTransformer(transformer.Pass());
   }
   gfx::Insets GetHostInsets() const override {
@@ -88,7 +89,7 @@ class AshWindowTreeHostWin : public AshWindowTreeHost,
   void SetRootTransform(const gfx::Transform& transform) override {
     transformer_helper_.SetTransform(transform);
   }
-  gfx::Transform GetRootTransform() const {
+  gfx::Transform GetRootTransform() const override {
     return transformer_helper_.GetTransform();
   }
   gfx::Transform GetInverseRootTransform() const override {

ash/system/win/audio/tray_audio_win.h

@@ -14,7 +14,7 @@ namespace ash {
 class TrayAudioWin : public TrayAudio {
  public:
   explicit TrayAudioWin(SystemTray* system_tray);
-  virtual ~TrayAudioWin();
+  ~TrayAudioWin() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TrayAudioWin);