Parametrize a variety of constants in preparation for changing them in MD.

chrome/browser/ui/views/tabs/tab_strip.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 CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_H_
 #define CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 360 matching lines @@
 
   // Calculates the bounds needed for each of the tabs, placing the result in
   // |bounds|.
   void CalculateBoundsForDraggedTabs(const Tabs& tabs,
                                      std::vector<gfx::Rect>* bounds);
 
   // Returns the size needed for the specified tabs. This is invoked during drag
   // and drop to calculate offsets and positioning.
   int GetSizeNeededForTabs(const Tabs& tabs);
 
-  // Returns the amount of overlap between adjacent tabs.
-  int GetTabOverlap() const;

[Peter Kasting, 2015/09/18 20:40:46]

Turns out I didn't need this after all -- the mechanism to look up a
parametrized constant got simplified after I added this.

-
   // Returns the number of pinned tabs.
   int GetPinnedTabCount() const;
 
   // Returns the last tab in the strip that's actually visible.  This will be
   // the actual last tab unless the strip is in the overflow state.
   const Tab* GetLastVisibleTab() const;
 
   // Adds the tab at |index| to |tabs_closing_map_| and removes the tab from
   // |tabs_|.
   void RemoveTabFromViewModel(int index);
@@ skipping 279 matching lines @@
   bool immersive_style_;
 
   // Our observers.
   typedef base::ObserverList<TabStripObserver> TabStripObservers;
   TabStripObservers observers_;
 
   DISALLOW_COPY_AND_ASSIGN(TabStrip);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_H_