Moved window opening callback to WebStateDelegate.

ios/web/public/web_state/ui/crw_web_delegate.h

Index: ios/web/public/web_state/ui/crw_web_delegate.h
diff --git a/ios/web/public/web_state/ui/crw_web_delegate.h b/ios/web/public/web_state/ui/crw_web_delegate.h
index 638924497619f9425cfaaa86f33e43579fd04ca4..b047af038599b54052941f424461c51bbba95d92 100644
--- a/ios/web/public/web_state/ui/crw_web_delegate.h
+++ b/ios/web/public/web_state/ui/crw_web_delegate.h
@@ -79,16 +79,6 @@ class GURL;
 - (void)webWillFinishHistoryNavigationFromEntry:(CRWSessionEntry*)fromEntry;
 // ---------------------------------------------------------------------
 
-// Called when |webController| wants to open a new window. |URL| is the URL of
-// the new window; |openerURL| is the URL of the page which requested a window
-// to be open; |initiatedByUser| is YES if action was caused by the user.
-// |webController| will not open a window if this method returns nil. This
-// method can not return |webController|.
-- (CRWWebController*)webController:(CRWWebController*)webController
-         createWebControllerForURL:(const GURL&)URL
-                         openerURL:(const GURL&)openerURL
-                   initiatedByUser:(BOOL)initiatedByUser;
-
 @optional
 
 // Called to ask CRWWebDelegate if |CRWWebController| should open the given URL.