Move views::Accelerator to ui in order to use it from aura code.

chrome/browser/chromeos/login/screen_locker_views.h

Index: chrome/browser/chromeos/login/screen_locker_views.h
diff --git a/chrome/browser/chromeos/login/screen_locker_views.h b/chrome/browser/chromeos/login/screen_locker_views.h
index db95a5cac37285ae5986be02740b501535355c59..aa6eef8e6c05714eb45dfe06bca06a98d465da25 100644
--- a/chrome/browser/chromeos/login/screen_locker_views.h
+++ b/chrome/browser/chromeos/login/screen_locker_views.h
@@ -30,7 +30,7 @@ class ScreenLockerTester;
 class ScreenLockerViews : public ScreenLockerDelegate,
                           public MessageBubbleDelegate,
                           public CaptchaView::Delegate,
-                          public views::AcceleratorTarget {
+                          public ui::AcceleratorTarget {
  public:
   // Interface that helps switching from ScreenLockView to CaptchaView.
   class ScreenLockViewContainer {
@@ -90,9 +90,8 @@ class ScreenLockerViews : public ScreenLockerDelegate,
   void ShowErrorBubble(const string16& message,
                        views::BubbleBorder::ArrowLocation arrow_location);
 
-  // Overridden from AcceleratorTarget:
-  virtual bool AcceleratorPressed(const views::Accelerator& accelerator)
-      OVERRIDE;
+  // Overridden from ui::AcceleratorTarget:
+  virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
 
   // Event handler for client-event.
   CHROMEGTK_CALLBACK_1(ScreenLockerViews, void, OnClientEvent, GdkEventClient*);