Fix multiple problems with omnibox text handling across focus changes.

chrome/browser/ui/gtk/browser_window_gtk.cc

 // Copyright 2012 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/ui/gtk/browser_window_gtk.h"
 
 #include <gdk/gdkkeysyms.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 1226 matching lines @@
     new_contents->GetView()->RestoreFocus();
     FindTabHelper* find_tab_helper =
         FindTabHelper::FromWebContents(new_contents);
     if (find_tab_helper->find_ui_active())
       browser_->GetFindBarController()->find_bar()->SetFocusAndSelection();
   }
 
   // Update all the UI bits.
   UpdateTitleBar();
   MaybeShowBookmarkBar(false);
+
+  // The Browser expects a platform-specific TabStripModelObserver to call
+  // OnActiveTabChanged().
+  browser_->OnActiveTabChanged(old_contents, new_contents, index, reason);
 }
 
 void BrowserWindowGtk::ActiveWindowChanged(GdkWindow* active_window) {
   // Do nothing if we're in the process of closing the browser window.
   if (!window_)
     return;
 
   bool is_active = gtk_widget_get_window(GTK_WIDGET(window_)) == active_window;
   bool changed = (is_active != is_active_);
 
@@ skipping 1157 matching lines @@
           wm_type == ui::WM_OPENBOX ||
           wm_type == ui::WM_XFWM4);
 }
 
 // static
 BrowserWindow* BrowserWindow::CreateBrowserWindow(Browser* browser) {
   BrowserWindowGtk* browser_window_gtk = new BrowserWindowGtk(browser);
   browser_window_gtk->Init();
   return browser_window_gtk;
 }