Remove unused code for the metro window switcher button

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

Index: chrome/browser/ui/views/frame/opaque_browser_frame_view_layout_unittest.cc
diff --git a/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout_unittest.cc b/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout_unittest.cc
index ea8df4def42a2248c1815912feea2ca3c514ebd8..518380fa44bfb513e5b09d731876db6515f5b68f 100644
--- a/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout_unittest.cc
+++ b/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout_unittest.cc
@@ -128,10 +128,6 @@ class TestLayoutDelegate : public OpaqueBrowserFrameViewLayoutDelegate {
     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);