Revert 151353 - Panels refactor: Support browserless panels on Linux.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
===================================================================
--- chrome/chrome_browser.gypi	(revision 151357)
+++ chrome/chrome_browser.gypi	(working copy)
@@ -3205,8 +3205,6 @@
         'browser/ui/gtk/gtk_tree.h',
         'browser/ui/gtk/gtk_util.cc',
         'browser/ui/gtk/gtk_util.h',
-        'browser/ui/gtk/gtk_window_util.cc',
-        'browser/ui/gtk/gtk_window_util.h',
         'browser/ui/gtk/hover_controller_gtk.cc',
         'browser/ui/gtk/hover_controller_gtk.h',
         'browser/ui/gtk/hung_renderer_dialog_gtk.cc',
@@ -3400,7 +3398,6 @@
         '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',
@@ -3413,8 +3410,6 @@
         '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',