Have panels respond to changes in work area on Linux.

views/widget/native_widget_gtk.cc

 // Copyright (c) 2011 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 "views/widget/native_widget_gtk.h"
 
 #include <X11/Xatom.h>
 #include <X11/Xlib.h>
 #include <X11/extensions/shape.h>
 #include <gdk/gdk.h>
 #include <gdk/gdkx.h>
 
 #include <set>
 #include <vector>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "ui/base/dragdrop/drag_drop_types.h"
 #include "ui/base/dragdrop/os_exchange_data.h"
 #include "ui/base/dragdrop/os_exchange_data_provider_gtk.h"
 #include "ui/base/gtk/g_object_destructor_filo.h"
 #include "ui/base/gtk/gtk_signal_registrar.h"
 #include "ui/base/gtk/gtk_windowing.h"
 #include "ui/base/gtk/scoped_handle_gtk.h"
 #include "ui/base/hit_test.h"
+#include "ui/base/x/active_window_watcher_x.h"
 #include "ui/base/x/x11_util.h"
 #include "ui/gfx/canvas_skia_paint.h"
 #include "ui/gfx/compositor/compositor.h"
 #include "ui/gfx/gtk_util.h"
 #include "ui/gfx/path.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/bubble/bubble_delegate.h"
 #include "ui/views/focus/view_storage.h"
 #include "ui/views/ime/input_method_gtk.h"
 #include "views/controls/textfield/native_textfield_views.h"
@@ skipping 514 matching lines @@
       gtk_views_fixed_get_widget_size(GetNativeView(), &width, &height)) {
     out->SetSize(width, height);
   } else {
     GtkRequisition requisition;
     gtk_widget_get_child_requisition(GetNativeView(), &requisition);
     out->SetSize(requisition.width, requisition.height);
   }
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-// NativeWidgetGtk, ActiveWindowWatcherX::Observer implementation:
+// NativeWidgetGtk, ActiveWindowWatcherXObserver implementation:
 
 void NativeWidgetGtk::ActiveWindowChanged(GdkWindow* active_window) {
   if (!GetNativeView())
     return;
 
   bool was_active = IsActive();
   is_active_ = (active_window == GTK_WIDGET(GetNativeView())->window);
   if (!is_active_ && active_window && !child_) {
     // We're not active, but the force the window to be rendered as active if
     // a child window is transient to us.
@@ skipping 1729 matching lines @@
     button_pressed = event->type == GDK_BUTTON_PRESS ||
         event->type == GDK_2BUTTON_PRESS ||
         event->type == GDK_3BUTTON_PRESS;
     gdk_event_free(event);
   }
   return button_pressed;
 }
 
 }  // namespace internal
 }  // namespace views