Remove grow box rect support, browser part.

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 fc5db01508c6e98c8f14228c9fd8b32fc7dfacfe..75f475ba00d1c1a4e574ad0959e0552ec5cdc9c2 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller.h
+++ b/chrome/browser/ui/cocoa/browser_window_controller.h
@@ -281,10 +281,6 @@ class Command;
 // whether it would be appropriate to show a zoom bubble or not.
 - (void)zoomChangedForActiveTab:(BOOL)canShowBubble;
 
-// Return the rect, in WebKit coordinates (flipped), of the window's grow box
-// in the coordinate system of the content area of the currently selected tab.
-- (NSRect)selectedTabGrowBoxRect;
-
 // Called to tell the selected tab to update its loading state.
 // |force| is set if the update is due to changing tabs, as opposed to
 // the page-load finishing.  See comment in reload_button_cocoa.h.