app_list: Make min page switcher button width and spacing smaller.

ui/app_list/page_switcher.h

 // 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.
 
 #ifndef UI_APP_LIST_PAGE_SWITCHER_H_
 #define UI_APP_LIST_PAGE_SWITCHER_H_
 
 #include "base/basictypes.h"
 #include "ui/app_list/pagination_model_observer.h"
 #include "ui/views/controls/button/button.h"
@@ skipping 11 matching lines @@
                      public PaginationModelObserver {
  public:
   explicit PageSwitcher(PaginationModel* model);
   virtual ~PageSwitcher();
 
   // Overridden from views::View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void Layout() OVERRIDE;
 
  private:
-  void CalculateButtonWidth(int contents_width);
+  void CalculateButtonWidthAndSpacing(int contents_width);
 
   // Overridden from views::ButtonListener:
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
 
   // Overridden from PaginationModelObserver:
   virtual void TotalPagesChanged() OVERRIDE;
   virtual void SelectedPageChanged(int old_selected, int new_selected) OVERRIDE;
   virtual void TransitionChanged() OVERRIDE;
 
   PaginationModel* model_;  // Owned by parent AppListView.
   views::View* buttons_;  // Owned by views hierarchy.
 
   DISALLOW_COPY_AND_ASSIGN(PageSwitcher);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_PAGE_SWITCHER_H_