New action box button images and supporting code

chrome/browser/ui/views/location_bar/action_box_button_view.h

Index: chrome/browser/ui/views/location_bar/action_box_button_view.h
diff --git a/chrome/browser/ui/views/location_bar/action_box_button_view.h b/chrome/browser/ui/views/location_bar/action_box_button_view.h
index d20b8476c03ca8fbae2417aaef4b2072c9311ddb..e42995c82729183bd2b57325aa0c21f6092f2596 100644
--- a/chrome/browser/ui/views/location_bar/action_box_button_view.h
+++ b/chrome/browser/ui/views/location_bar/action_box_button_view.h
@@ -18,6 +18,10 @@ class ActionBoxButtonView : public views::MenuButton,
                             public views::MenuButtonListener,
                             public ActionBoxButtonController::Delegate {
  public:
+  // Thickness of the top transparent area on a button image that overlaps
+  // location bar border.
+  static const int kBorderOverlap;
+
   ActionBoxButtonView(Browser* browser, const gfx::Point& menu_offset);
   virtual ~ActionBoxButtonView();
 
@@ -33,6 +37,10 @@ class ActionBoxButtonView : public views::MenuButton,
   virtual void OnMenuButtonClicked(View* source,
                                    const gfx::Point& point) OVERRIDE;
 
+  // Overridden from views::View:
+  virtual bool HasHitTestMask() const;
+  virtual void GetHitTestMask(gfx::Path* mask) const;
+
   // Overridden from ActionBoxButtonController::Delegate:
   virtual void ShowMenu(scoped_ptr<ActionBoxMenuModel> menu_model) OVERRIDE;