GTK: First draft of using native themes, partially based on evan's CL 118358.

chrome/browser/gtk/tabs/tab_strip_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/tabs/tab_strip_gtk.h"
 
 #include <algorithm>
 
 #include "app/gfx/canvas_paint.h"
 #include "app/l10n_util.h"
@@ skipping 1553 matching lines @@
 void TabStripGtk::SetTabBounds(TabGtk* tab, const gfx::Rect& bounds) {
   gfx::Rect bds = bounds;
   bds.set_x(gtk_util::MirroredLeftPointForRect(tabstrip_.get(), bounds));
   tab->SetBounds(bds);
   gtk_fixed_move(GTK_FIXED(tabstrip_.get()), tab->widget(),
                  bds.x(), bds.y());
 }
 
 CustomDrawButton* TabStripGtk::MakeNewTabButton() {
   CustomDrawButton* button = new CustomDrawButton(IDR_NEWTAB_BUTTON,
-      IDR_NEWTAB_BUTTON_P, IDR_NEWTAB_BUTTON_H, 0);
+      IDR_NEWTAB_BUTTON_P, IDR_NEWTAB_BUTTON_H, 0, NULL);
 
   g_signal_connect(G_OBJECT(button->widget()), "clicked",
                    G_CALLBACK(OnNewTabClicked), this);
   GTK_WIDGET_UNSET_FLAGS(button->widget(), GTK_CAN_FOCUS);
   gtk_fixed_put(GTK_FIXED(tabstrip_.get()), button->widget(), 0, 0);
 
   return button;
 }
 
 #if defined(LINUX2)
@@ skipping 19 matching lines @@
   message.set_type(TabOverviewTypes::Message::WM_SWITCH_TO_OVERVIEW_MODE);
   GtkWidget* browser_widget = GTK_WIDGET(
       static_cast<BrowserWindowGtk*>(browser->window())->GetNativeHandle());
   message.set_param(0, x11_util::GetX11WindowFromGtkWidget(browser_widget));
   TabOverviewTypes::instance()->SendMessage(message);
 
   UserMetrics::RecordAction(L"TabOverview_PressedTabOverviewButton",
                             tabstrip->model_->profile());
 }
 #endif