Removed -[CRWWebDelegate webController:titleDidChange:].

ios/web/web_state/web_state_impl.mm

 // Copyright 2013 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/web_state_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/logging.h"
@@ skipping 199 matching lines @@
     observer.DidFinishNavigation(context.get());
 }
 
 void WebStateImpl::OnErrorPageNavigation(const GURL& url) {
   std::unique_ptr<NavigationContext> context =
       NavigationContextImpl::CreateErrorPageNavigationContext(this, url);
   for (auto& observer : observers_)
     observer.DidFinishNavigation(context.get());
 }
 
+void WebStateImpl::OnTitleChanged() {
+  for (auto& observer : observers_)
+    observer.TitleWasSet();
+}
+
 void WebStateImpl::OnRenderProcessGone() {
   for (auto& observer : observers_)
     observer.RenderProcessGone();
 }
 
 bool WebStateImpl::OnScriptCommandReceived(const std::string& command,
                                            const base::DictionaryValue& value,
                                            const GURL& url,
                                            bool user_is_interacting) {
   size_t dot_position = command.find_first_of('.');
@@ skipping 511 matching lines @@
     const LoadCommittedDetails& load_details) {
   for (auto& observer : observers_)
     observer.NavigationItemCommitted(load_details);
 }
 
 WebState* WebStateImpl::GetWebState() {
   return this;
 }
 
 }  // namespace web