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

chrome/browser/ui/views/dropdown_bar_host.h

Index: chrome/browser/ui/views/dropdown_bar_host.h
diff --git a/chrome/browser/ui/views/dropdown_bar_host.h b/chrome/browser/ui/views/dropdown_bar_host.h
index 4c5b5af8cb890feb8ac124f5d8a7d68cfed1b99a..0140f8b48ef857649c6c720fb87935cb88612b75 100644
--- a/chrome/browser/ui/views/dropdown_bar_host.h
+++ b/chrome/browser/ui/views/dropdown_bar_host.h
@@ -39,7 +39,7 @@ class Widget;
 // obscuring the selection results in FindBar.
 //
 ////////////////////////////////////////////////////////////////////////////////
-class DropdownBarHost : public views::AcceleratorTarget,
+class DropdownBarHost : public ui::AcceleratorTarget,
                         public views::FocusChangeListener,
                         public ui::AnimationDelegate {
  public:
@@ -76,8 +76,8 @@ class DropdownBarHost : public views::AcceleratorTarget,
   virtual void OnDidChangeFocus(views::View* focused_before,
                                 views::View* focused_now) OVERRIDE;
 
-  // Overridden from views::AcceleratorTarget:
-  virtual bool AcceleratorPressed(const views::Accelerator& accelerator) = 0;
+  // Overridden from ui::AcceleratorTarget:
+  virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) = 0;
 
   // ui::AnimationDelegate implementation:
   virtual void AnimationProgressed(const ui::Animation* animation);