Add PanelBrowserTitlebarGtk for panels on GTK.

chrome/browser/ui/gtk/browser_window_gtk.cc

 // Copyright (c) 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 <dlfcn.h>
 #include <gdk/gdkkeysyms.h>
 
 #include <algorithm>
@@ skipping 1801 matching lines @@
   gtk_widget_set_double_buffered(window_container_, FALSE);
   gtk_widget_set_redraw_on_allocate(window_container_, TRUE);
   g_signal_connect(window_container_, "expose-event",
                    G_CALLBACK(OnCustomFrameExposeThunk), this);
   gtk_container_add(GTK_CONTAINER(window_container_), window_vbox_);
 
   tabstrip_.reset(new TabStripGtk(browser_->tabstrip_model(), this));
   tabstrip_->Init();
 
   // Build the titlebar (tabstrip + header space + min/max/close buttons).
-  titlebar_.reset(new BrowserTitlebar(this, window_));
+  titlebar_.reset(CreateBrowserTitlebar());
 
   // Insert the tabstrip into the window.
   gtk_box_pack_start(GTK_BOX(window_vbox_), titlebar_->widget(), FALSE, FALSE,
                      0);
 
   toolbar_.reset(new BrowserToolbarGtk(browser_.get(), this));
   toolbar_->Init(window_);
   gtk_box_pack_start(GTK_BOX(window_vbox_), toolbar_->widget(),
                      FALSE, FALSE, 0);
   g_signal_connect_after(toolbar_->widget(), "expose-event",
@@ skipping 614 matching lines @@
   return browser_->SupportsWindowFeature(Browser::FEATURE_BOOKMARKBAR);
 }
 
 bool BrowserWindowGtk::UsingCustomPopupFrame() const {
   ThemeServiceGtk* theme_provider = ThemeServiceGtk::GetFrom(
       browser()->profile());
   return !theme_provider->UsingNativeTheme() &&
          (browser()->is_type_popup() || browser()->is_type_panel());
 }
 
+BrowserTitlebar* BrowserWindowGtk::CreateBrowserTitlebar() {
+  return new BrowserTitlebar(this, window_);
+}
+
 bool BrowserWindowGtk::GetWindowEdge(int x, int y, GdkWindowEdge* edge) {
   if (!UseCustomFrame())
     return false;
 
   if (IsMaximized() || IsFullscreen())
     return false;
 
   if (x < kFrameBorderThickness) {
     // Left edge.
     if (y < kResizeAreaCornerSize - kTopResizeAdjust) {
@@ skipping 111 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;
 }