Removed Form Resubmission callback from CRWWebDelegate.

ios/web/web_state/ui/crw_web_controller.mm

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ios/web/web_state/ui/crw_web_controller.h"
 
 #import <WebKit/WebKit.h>
 
 #import <objc/runtime.h>
 #include <stddef.h>
@@ skipping 5329 matching lines @@
 
   if (!isFormPOSTResubmission ||
       currentItem->ShouldSkipResubmitDataConfirmation()) {
     webViewNavigationBlock();
     return;
   }
 
   // If the request is form submission or resubmission, then prompt the
   // user before proceeding.
   DCHECK(isFormPOSTResubmission);
-  [self.delegate webController:self
-      onFormResubmissionForRequest:nil
-                     continueBlock:webViewNavigationBlock
-                       cancelBlock:defaultNavigationBlock];
+  _webStateImpl->ShowRepostFormWarningDialog(
+      base::BindBlock(^(bool shouldContinue) {
+        if (shouldContinue)
+          webViewNavigationBlock();
+        else
+          defaultNavigationBlock();
+      }));
 }
 
 #pragma mark -
 #pragma mark Testing-Only Methods
 
 - (void)injectWebViewContentView:(CRWWebViewContentView*)webViewContentView {
   [self removeWebViewAllowingCachedReconstruction:NO];
 
   _lastRegisteredRequestURL = _defaultURL;
   [_containerView displayWebViewContentView:webViewContentView];
@@ skipping 67 matching lines @@
   }
 
   return web::WEB_VIEW_DOCUMENT_TYPE_GENERIC;
 }
 
 - (NSString*)refererFromNavigationAction:(WKNavigationAction*)action {
   return [action.request valueForHTTPHeaderField:@"Referer"];
 }
 
 @end