Don't draw a window title on browser windows.

chrome/browser/ui/cocoa/framed_browser_window.h

Index: chrome/browser/ui/cocoa/framed_browser_window.h
diff --git a/chrome/browser/ui/cocoa/framed_browser_window.h b/chrome/browser/ui/cocoa/framed_browser_window.h
index 3c9a6ba0889d77b3b23e912850c5b6df7a90fac1..5c596480c767ef834f79d65d204ce4528ed9d777 100644
--- a/chrome/browser/ui/cocoa/framed_browser_window.h
+++ b/chrome/browser/ui/cocoa/framed_browser_window.h
@@ -25,6 +25,7 @@ const NSInteger kFramedWindowButtonsWithoutTabStripOffsetFromLeft = 8;
 // this. We also handle our own window controls and custom window frame drawing.
 @interface FramedBrowserWindow : ChromeBrowserWindow {
  @private
+  // Only used from 10.6-10.9.
   BOOL shouldHideTitle_;
   BOOL hasTabStrip_;
   NSButton* closeButton_;
@@ -66,10 +67,9 @@ const NSInteger kFramedWindowButtonsWithoutTabStripOffsetFromLeft = 8;
 
 @interface NSWindow (UndocumentedAPI)
 
-// Undocumented Cocoa API to suppress drawing of the window's title.
-// -setTitle: still works, but the title set only applies to the
-// miniwindow and menus (and, importantly, Expose).  Overridden to
-// return |shouldHideTitle_|.
+// Undocumented Cocoa API (10.6-10.9) to suppress drawing of the window's title.
+// -setTitle: still works, but the title set only applies to the miniwindow and
+// menus (and, importantly, Expose). Overridden to return |shouldHideTitle_|.
 -(BOOL)_isTitleHidden;
 
 @end