Remove unused code for the metro window switcher button

chrome/browser/ui/views/frame/opaque_browser_frame_view_layout_unittest.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h"
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/views/profiles/avatar_label.h"
@@ skipping 110 matching lines @@
   }
 
   virtual bool IsTabStripVisible() const OVERRIDE {
     return window_title_.empty();
   }
 
   virtual int GetTabStripHeight() const OVERRIDE {
     return IsTabStripVisible() ? Tab::GetMinimumUnselectedSize().height() : 0;
   }
 
-  virtual int GetAdditionalReservedSpaceInTabStrip() const OVERRIDE {
-    return 0;
-  }
-
   virtual gfx::Size GetTabstripPreferredSize() const OVERRIDE {
     // Measured from Tabstrip::GetPreferredSize().
     return IsTabStripVisible() ? gfx::Size(78, 29) : gfx::Size(0, 0);
   }
 
  private:
   base::string16 window_title_;
   bool show_avatar_;
   bool show_caption_buttons_;
   WindowState window_state_;
@@ skipping 400 matching lines @@
 
   // Check the location of the avatar label relative to the avatar button if
   // both are displayed on the left side.
   // The label height and width depends on the font size and the text displayed.
   // This may possibly change, so we don't test it here.
   EXPECT_EQ(menu_button_->bounds().x() - 2, avatar_label_->bounds().x());
   EXPECT_EQ(
       menu_button_->bounds().bottom() - 3 - avatar_label_->bounds().height(),
       avatar_label_->bounds().y());
 }