Take two at hooking up title bar on linux.

chrome/browser/gtk/browser_window_gtk.cc

 // Copyright (c) 2009 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.
 
 #include "chrome/browser/gtk/browser_window_gtk.h"
 
 #include "base/logging.h"
 #include "base/base_paths_linux.h"
 #include "base/path_service.h"
 #include "chrome/browser/browser.h"
@@ skipping 214 matching lines @@
 
 StatusBubble* BrowserWindowGtk::GetStatusBubble() {
   return status_bubble_.get();
 }
 
 void BrowserWindowGtk::SelectedTabToolbarSizeChanged(bool is_animating) {
   NOTIMPLEMENTED();
 }
 
 void BrowserWindowGtk::UpdateTitleBar() {
-  NOTIMPLEMENTED();
+  std::wstring title = browser_->GetCurrentPageTitle();
+  gtk_window_set_title(window_, WideToUTF8(title).c_str());
+  if (browser_->SupportsWindowFeature(Browser::FEATURE_TITLEBAR)) {
+    // If we're showing a title bar, we should update the app icon.
+    NOTIMPLEMENTED();
+  }
 }
 
 void BrowserWindowGtk::UpdateLoadingAnimations(bool should_animate) {
   NOTIMPLEMENTED();
 }
 
 void BrowserWindowGtk::SetStarredState(bool is_starred) {
   NOTIMPLEMENTED();
 }
 
@@ skipping 147 matching lines @@
 void BrowserWindowGtk::SetCustomFrame(bool custom_frame) {
   custom_frame_ = custom_frame;
   if (custom_frame_) {
     gtk_container_set_border_width(GTK_CONTAINER(vbox_), 2);
     // TODO(port): all the crazy blue title bar, etc.
     NOTIMPLEMENTED();
   } else {
     gtk_container_set_border_width(GTK_CONTAINER(vbox_), 0);
   }
 }