Revert 245433 "Linux Aura: Added --use-system-title-bar flag."

trunk/src/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h

Index: trunk/src/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h
===================================================================
--- trunk/src/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h	(revision 245469)
+++ trunk/src/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h	(working copy)
@@ -92,12 +92,6 @@
 
   const gfx::Rect& client_view_bounds() const { return client_view_bounds_; }
 
-  // Determines whether the title bar is condensed vertically, as when the
-  // window is maximized. If true, the title bar is just the height of a tab,
-  // rather than having extra vertical space above the tabs. This also removes
-  // the thick frame border and rounded corners.
-  bool IsTitleBarCondensed() const;
-
  private:
   // Whether a specific button should be inserted on the leading or trailing
   // side.