Deprecate __gCrWeb['sendFaviconsToHost'] by inlining it.

ios/web/web_state/js/resources/legacy.js

Index: ios/web/web_state/js/resources/legacy.js
diff --git a/ios/web/web_state/js/resources/legacy.js b/ios/web/web_state/js/resources/legacy.js
new file mode 100644
index 0000000000000000000000000000000000000000..ccf34de37a4e001da40fa767aa9f7373bd056651
--- /dev/null
+++ b/ios/web/web_state/js/resources/legacy.js
@@ -0,0 +1,35 @@
+// 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 Collection of legacy APIs that should eventually be cleaned up.
+ */
+
+goog.provide('__crWeb.legacy');
+
+goog.require('__crWeb.common');
+goog.require('__crWeb.message');
+
+/** Beginning of anonymouse object */
+(function() {
+
+  /**
+   * Handles document load completion tasks. Invoked from
+   * [WKNavigationDelegate webView:didFinishNavigation:], when document load is
+   * complete.
+   * TODO(crbug.com/546350): Investigate using
+   * WKUserScriptInjectionTimeAtDocumentEnd to inject this material at the
+   * appropriate time so that this API will not be needed.
+   */
+  __gCrWeb.didFinishNavigation = function() {
+    // 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'});
+  }
+
+}());  // End of anonymouse object