Removed CRWWebDelagate callbacks for load cancellation.

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 2061 matching lines @@
 
 - (void)abortLoad {
   [_webView stopLoading];
   [_pendingNavigationInfo setCancelled:YES];
   _certVerificationErrors->Clear();
   [self loadCancelled];
 }
 
 - (void)loadCancelled {
   [_passKitDownloader cancelPendingDownload];
-
-  // Current load will not complete; this should be communicated upstream to the
-  // delegate.
-  switch (_loadPhase) {
-    case web::LOAD_REQUESTED:
-      // Load phase after abort is always PAGE_LOADED.
-      _loadPhase = web::PAGE_LOADED;
-      if (!_isHalted) {
-        _webStateImpl->SetIsLoading(false);
-      }
-      [_delegate webCancelStartLoadingRequest];
-      break;
-    case web::PAGE_LOADING:
-      // The previous load never fully completed before this page change. The
-      // loadPhase is changed to PAGE_LOADED to indicate the cycle is complete,
-      // and the delegate is called.
-      _loadPhase = web::PAGE_LOADED;
-      if (!_isHalted) {
-        _webStateImpl->SetIsLoading(false);
-      }
-      [_delegate webLoadCancelled:_URLOnStartLoading];
-      break;
-    case web::PAGE_LOADED:
-      break;
+  if (_loadPhase != web::PAGE_LOADED) {
+    _loadPhase = web::PAGE_LOADED;
+    if (!_isHalted) {
+      _webStateImpl->SetIsLoading(false);
+    }
   }
 }
 
 - (void)goToItemAtIndex:(int)index {
   CRWSessionController* sessionController = self.sessionController;
   const web::ScopedNavigationItemImplList& items = sessionController.items;
   if (index < 0 || index >= static_cast<int>(items.size())) {
     NOTREACHED();
     return;
   }
@@ skipping 3089 matching lines @@
 - (void)simulateLoadRequestWithURL:(const GURL&)URL {
   _lastRegisteredRequestURL = URL;
   _loadPhase = web::LOAD_REQUESTED;
 }
 
 - (NSString*)referrerFromNavigationAction:(WKNavigationAction*)action {
   return [action.request valueForHTTPHeaderField:kReferrerHeaderName];
 }
 
 @end