cros: Ensure task manager shows correct title for lock screen webview

chrome/browser/chromeos/login/ui/webui_login_view.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_UI_WEBUI_LOGIN_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_UI_WEBUI_LOGIN_VIEW_H_
 
 #include <map>
 #include <string>
 
@@ skipping 29 matching lines @@
 // WebUI based start up and lock screens. It contains a WebView.
 class WebUILoginView : public views::View,
                        public content::WebContentsDelegate,
                        public content::NotificationObserver,
                        public ChromeWebModalDialogManagerDelegate,
                        public web_modal::WebContentsModalDialogHost {
  public:
   struct WebViewSettings {
     // URL of the WebView to preload and reuse across WebUILoginView instances.
     GURL preloaded_url;
+
+    // Title of the web contents. This will be shown in the task manager. If
+    // empty, the default webview title will be used.
+    base::string16 web_view_title;
   };
 
   // Internal class name.
   static const char kViewClassName[];
 
   explicit WebUILoginView(const WebViewSettings& settings);
   ~WebUILoginView() override;
 
   // Initializes the webui login view.
   virtual void Init();
@@ skipping 44 matching lines @@
   void set_is_hidden(bool hidden) { is_hidden_ = hidden; }
 
   bool webui_visible() const { return webui_visible_; }
 
   // Let suppress emission of this signal.
   void set_should_emit_login_prompt_visible(bool emit) {
     should_emit_login_prompt_visible_ = emit;
   }
 
  protected:
-  static void InitializeWebView(views::WebView* web_view);
+  static void InitializeWebView(views::WebView* web_view,
+                                const base::string16& title);
 
   // Overridden from views::View:
   void Layout() override;
   void OnLocaleChanged() override;
   void ChildPreferredSizeChanged(View* child) override;
   void AboutToRequestFocusFromTabTraversal(bool reverse) override;
 
   // Overridden from content::NotificationObserver.
   void Observe(int type,
                const content::NotificationSource& source,
@@ skipping 70 matching lines @@
   std::unique_ptr<CycleFocusTraversable> cycle_focus_traversable_;
 
   base::ObserverList<web_modal::ModalDialogHostObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(WebUILoginView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_UI_WEBUI_LOGIN_VIEW_H_