MacViews: Remove BrowserWindowController dependency from AppController

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 31d800ee8eefad639740e53774668240ba2391ec..b9676e175e7d5de6c26466c83f302f0bbcb01013 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller.h
+++ b/chrome/browser/ui/cocoa/browser_window_controller.h
@@ -195,13 +195,6 @@ class Command;
 // BWC. This method returns nil if no window in the chain has a BWC.
 + (BrowserWindowController*)browserWindowControllerForView:(NSView*)view;
 
-// Helper method used to update the "Signin" menu item to reflect the current
-// signed in state. Class-level function as it's still required even when there
-// are no open browser windows.
-+ (void)updateSigninItem:(id)signinItem
-              shouldShow:(BOOL)showSigninMenuItem
-          currentProfile:(Profile*)profile;
-
 // Load the browser window nib and do any Cocoa-specific initialization.
 // Takes ownership of |browser|.
 - (id)initWithBrowser:(Browser*)browser;