Enable Clang warnings in .cc files for Linux+[Aura/ChromeOS]

ash/focus_cycler_unittest.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 "ash/focus_cycler.h"
 
 #include "ash/launcher/launcher.h"
 #include "ash/root_window_controller.h"
 #include "ash/shelf/shelf_widget.h"
 #include "ash/shell.h"
@@ skipping 28 matching lines @@
 
 class PanedWidgetDelegate : public views::WidgetDelegate {
  public:
   PanedWidgetDelegate(views::Widget* widget) : widget_(widget) {}
 
   void SetAccessiblePanes(const std::vector<views::View*>& panes) {
     accessible_panes_ = panes;
   }
 
   // views::WidgetDelegate.
-  virtual void GetAccessiblePanes(std::vector<views::View*>* panes) {
-    std::copy(accessible_panes_.begin(), accessible_panes_.end(),
+  virtual void GetAccessiblePanes(std::vector<views::View*>* panes) OVERRIDE {
+    std::copy(accessible_panes_.begin(),
+              accessible_panes_.end(),
               std::back_inserter(*panes));
   }
   virtual views::Widget* GetWidget() OVERRIDE {
     return widget_;
   };
   virtual const views::Widget* GetWidget() const OVERRIDE {
     return widget_;
   }
 
  private:
@@ skipping 331 matching lines @@
   // should do the same thing.
   focus_cycler()->RotateFocus(FocusCycler::BACKWARD);
   EXPECT_TRUE(shelf_widget()->IsActive());
   event_generator.PressKey(ui::VKEY_ESCAPE, 0);
   EXPECT_TRUE(wm::IsActiveWindow(browser_window));
   EXPECT_EQ(focus_manager->GetFocusedView(), view1);
 }
 
 }  // namespace test
 }  // namespace ash