Add detached mode plumbing

chrome/browser/ui/cocoa/browser_window_controller.h

Index: chrome/browser/ui/cocoa/browser_window_controller.h
diff --git a/chrome/browser/ui/cocoa/browser_window_controller.h b/chrome/browser/ui/cocoa/browser_window_controller.h
index 53b179a0127f538fd7c56725ab02b104ad2acd0c..5033b3031ab9e8790c529e0bd092655502cd6b83 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller.h
+++ b/chrome/browser/ui/cocoa/browser_window_controller.h
@@ -87,6 +87,7 @@ class Command;
   scoped_ptr<ExclusiveAccessController> exclusiveAccessController_;
   base::scoped_nsobject<BrowserWindowFullscreenTransition>
       fullscreenTransition_;
+  base::scoped_nsobject<NSWindow> detachedModeWindow_;
 
   // Strong. StatusBubble is a special case of a strong reference that
   // we don't wrap in a scoped_ptr because it is acting the same
@@ -391,7 +392,6 @@ class Command;
 // Returns current media state, determined by the media state of tabs, set by
 // UpdateMediaState.
 - (TabMediaState)mediaState;
-
 @end  // @interface BrowserWindowController