Manually fetch favicons after hash changes.

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 <objc/runtime.h>
 #include <stddef.h>
 
 #include <cmath>
@@ skipping 2408 matching lines @@
   }
   DLOG(ERROR) << "JavaScript error: " << errorMessage
               << " URL:" << [self currentURL].spec();
   return YES;
 }
 
 - (BOOL)handleWindowHashChangeMessage:(base::DictionaryValue*)message
                               context:(NSDictionary*)context {
   [self checkForUnexpectedURLChange];
 
+  // Because hash changes don't trigger |-didFinishNavigation|, fetch favicons
+  // for the new page manually.
+  [self evaluateJavaScript:@"__gCrWeb.sendFaviconsToHost();"
+       stringResultHandler:nil];
+
   // Notify the observers.
   _webStateImpl->OnUrlHashChanged();
   return YES;
 }
 
 - (BOOL)handleWindowHistoryBackMessage:(base::DictionaryValue*)message
                                context:(NSDictionary*)context {
   [self goBack];
   return YES;
 }
@@ skipping 1471 matching lines @@
   if ([MIMEType isEqualToString:@"text/html"] ||
       [MIMEType isEqualToString:@"application/xhtml+xml"] ||
       [MIMEType isEqualToString:@"application/xml"]) {
     return web::WEB_VIEW_DOCUMENT_TYPE_HTML;
   }
 
   return web::WEB_VIEW_DOCUMENT_TYPE_GENERIC;
 }
 
 @end