Deprecate __gCrWeb['sendFaviconsToHost'] by inlining it.

ios/web/web_state/js/resources/navigation.js

 // Copyright 2017 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.
 
 /**
  * @fileoverview Navigation related APIs.
  */
 
 goog.provide('__crWeb.navigation');
 
+goog.require('__crWeb.common');
 goog.require('__crWeb.message');
 
 /** Beginning of anonymouse object */
 (function() {
 
   /**
    * A popstate event needs to be fired anytime the active history entry
    * changes without an associated document change. Either via back, forward, go
    * navigation or by loading the URL, clicking on a link, etc.
    */
@@ skipping 38 matching lines @@
    * @private
    */
   var originalWindowHistoryPushState = window.history.pushState;
   var originalWindowHistoryReplaceState = window.history.replaceState;
 
   __gCrWeb['replaceWebViewURL'] = function(url, stateObject) {
     originalWindowHistoryReplaceState.call(history, stateObject, '', url);
   };
 
   /**
+   * Handles document load completion tasks. Invoked from
+   * [WKNavigationDelegate webView:didFinishNavigation:], when document load is
+   * complete.
+   */
+  __gCrWeb.didFinishNavigation = function() {

[Eugene But (OOO till 7-30), 2017/04/12 21:33:08]

Do you want to move this to legacy.js instead?

+    // Send the favicons to the browser.
+    __gCrWeb.message.invokeOnHost({'command': 'document.favicons',
+                                   'favicons': __gCrWeb.common.getFavicons()});
+
+    // Add placeholders for plugin content.
+    if (__gCrWeb.common.updatePluginPlaceholders())
+      __gCrWeb.message.invokeOnHost({'command': 'addPluginPlaceholders'});
+  }
+
+  /**
    * Intercept window.history methods to call back/forward natively.
    */
   window.history.back = function() {
     __gCrWeb.message.invokeOnHost({'command': 'window.history.back'});
   };
 
   window.history.forward = function() {
     __gCrWeb.message.invokeOnHost({'command': 'window.history.forward'});
   };
 
@@ skipping 31 matching lines @@
     originalWindowHistoryReplaceState.call(history, stateObject,
                                            pageTitle, pageUrl);
     __gCrWeb.message.invokeOnHost(
         {'command': 'window.history.didReplaceState',
          'stateObject': serializedState,
          'baseUrl': document.baseURI,
          'pageUrl': pageUrl.toString()});
   };
 
   window.addEventListener('hashchange', function(evt) {
+    // Because hash changes don't trigger __gCrWeb.didFinishNavigation, so fetch
+    // favicons for the new page manually.
+    __gCrWeb.message.invokeOnHost({'command': 'document.favicons',
+                                   'favicons': __gCrWeb.common.getFavicons()});
+
     __gCrWeb.message.invokeOnHost({'command': 'window.hashchange'});
   });
 
   /** Flush the message queue. */
   if (__gCrWeb.message) {
     __gCrWeb.message.invokeQueues();
   }
 
 }());  // End of anonymouse object