Panels refactor: Support browserless panels on Linux.

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
@@ skipping 3316 matching lines @@
         'browser/ui/panels/panel_cocoa.h',
         'browser/ui/panels/panel_cocoa.mm',
         'browser/ui/panels/panel_constants.h',
         'browser/ui/panels/panel_drag_controller.cc',
         'browser/ui/panels/panel_drag_controller.h',
         'browser/ui/panels/panel_drag_gtk.cc',
         'browser/ui/panels/panel_drag_gtk.h',
         'browser/ui/panels/panel_frame_view.cc',
         'browser/ui/panels/panel_frame_view.h',
         'browser/ui/panels/panel_gtk.cc',
+        'browser/ui/panels/panel_gtk.h',
         'browser/ui/panels/panel_host.cc',
         'browser/ui/panels/panel_host.h',
         'browser/ui/panels/panel_resize_controller.cc',
         'browser/ui/panels/panel_resize_controller.h',
         'browser/ui/panels/panel_manager.cc',
         'browser/ui/panels/panel_manager.h',
         'browser/ui/panels/panel_mouse_watcher.cc',
         'browser/ui/panels/panel_mouse_watcher.h',
         'browser/ui/panels/panel_mouse_watcher_observer.h',
         'browser/ui/panels/panel_mouse_watcher_timer.cc',
         'browser/ui/panels/panel_strip.cc',
         'browser/ui/panels/panel_strip.h',
+        'browser/ui/panels/panel_titlebar_gtk.cc',
+        'browser/ui/panels/panel_titlebar_gtk.h',
         'browser/ui/panels/panel_titlebar_view_cocoa.h',
         'browser/ui/panels/panel_titlebar_view_cocoa.mm',
         'browser/ui/panels/panel_utils_cocoa.h',
         'browser/ui/panels/panel_utils_cocoa.mm',
         'browser/ui/panels/panel_view.cc',
         'browser/ui/panels/panel_view.h',
         'browser/ui/panels/panel_window_controller_cocoa.h',
         'browser/ui/panels/panel_window_controller_cocoa.mm',
         'browser/ui/panels/taskbar_window_thumbnailer_win.cc',
         'browser/ui/panels/taskbar_window_thumbnailer_win.h',
@@ skipping 2126 matching lines @@
           'variables': {
             'jni_gen_dir': 'chrome',
           },
           'includes': [ '../build/jni_generator.gypi' ],
         },
       ],
      },
     ],
   ],
 }