Added |-cancelJavaScriptDialogsForWebController:| to UI delegate.

ios/web/web_state/ui/crw_wk_web_view_web_controller.mm

 // Copyright 2014 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_wk_web_view_web_controller.h"
 
 #import <WebKit/WebKit.h>
 
 #include "base/containers/mru_cache.h"
 #include "base/ios/ios_util.h"
@@ skipping 871 matching lines @@
   base::WeakNSObject<CRWWKWebViewWebController> weakSelf(self);
   id crashHandler = ^{
     [weakSelf webViewWebProcessDidCrash];
   };
   return [[CRWWKWebViewCrashDetector alloc] initWithWebView:webView
                                                crashHandler:crashHandler];
 }
 
 - (void)webViewWebProcessDidCrash {
   _webProcessIsDead = YES;
+  if ([self.UIDelegate
+          respondsToSelector:@selector(

[Eugene But (OOO till 7-30), 2015/12/04 23:24:11]

ditto

[kkhorimoto, 2015/12/10 01:27:32]

Done.

+                                 cancelJavaScriptDialogsForWebController:)]) {
+    [self.UIDelegate cancelJavaScriptDialogsForWebController:self];
+  }
   if ([self.delegate respondsToSelector:
           @selector(webControllerWebProcessDidCrash:)]) {
     [self.delegate webControllerWebProcessDidCrash:self];
   }
 }
 
 - (void)queryPageReferrerPolicy:(void(^)(NSString*))responseHandler {
   DCHECK(responseHandler);
   [self evaluateJavaScript:@"__gCrWeb.getPageReferrerPolicy()"
        stringResultHandler:^(NSString* referrer, NSError* error) {
@@ skipping 975 matching lines @@
         runJavaScriptTextInputPanelWithPrompt:prompt
                                   defaultText:defaultText
                                    requestURL:requestURL
                             completionHandler:completionHandler];
   } else if (completionHandler) {
     completionHandler(nil);
   }
 }
 
 @end