Extract a minimal subset of WebDialogUI/WebDialogDelegate from src/chrome -> src/ui/web_dialogs

chrome/browser/ui/webui/web_dialog_controller.cc

Index: chrome/browser/ui/webui/web_dialog_controller.cc
===================================================================
--- chrome/browser/ui/webui/web_dialog_controller.cc	(revision 135175)
+++ chrome/browser/ui/webui/web_dialog_controller.cc	(working copy)
@@ -6,13 +6,13 @@
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/webui/web_dialog_delegate.h"
+#include "ui/web_dialogs/web_dialog_delegate.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 
 WebDialogController::WebDialogController(
-    WebDialogDelegate* delegate,
+    web_dialogs::WebDialogDelegate* delegate,
     Profile* profile,
     Browser* browser)
       : dialog_delegate_(delegate) {