Update Panel mininimize/restore button on strip and expansion state change.

chrome/browser/ui/panels/panel_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/panels/panel_browser_window_gtk.h"
 
 #include "base/bind.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/gtk/browser_titlebar.h"
 #include "chrome/browser/ui/gtk/custom_button.h"
@@ skipping 256 matching lines @@
         IDR_THEME_FRAME : IDR_THEME_FRAME_INACTIVE);
   }
 
   return theme_provider->GetImageNamed(paint_state == PAINT_AS_ACTIVE ?
       IDR_THEME_TOOLBAR : IDR_THEME_TAB_BACKGROUND);
 }
 
 void PanelBrowserWindowGtk::DrawCustomFrame(cairo_t* cr,
                                             GtkWidget* widget,
                                             GdkEventExpose* event) {
-  GetPanelTitlebar()->UpdateMinimizeRestoreButtonVisibility();
-
   gfx::CairoCachedSurface* surface = GetThemeFrameImage()->ToCairo();
 
   surface->SetSource(cr, widget, 0, 0);
   cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_REPEAT);
   cairo_rectangle(cr, event->area.x, event->area.y,
                   event->area.width, event->area.height);
   cairo_fill(cr);
 }
 
 void PanelBrowserWindowGtk::ActiveWindowChanged(GdkWindow* active_window) {
@@ skipping 175 matching lines @@
 }
 
 void PanelBrowserWindowGtk::DestroyPanelBrowser() {
   DestroyBrowser();
 }
 
 void PanelBrowserWindowGtk::EnsurePanelFullyVisible() {
   gtk_window_present(window());
 }
 
-void PanelBrowserWindowGtk::SetPanelAppIconVisibility(bool visible) {
-  return;
-}
-
 void PanelBrowserWindowGtk::SetPanelAlwaysOnTop(bool on_top) {
   gtk_window_set_keep_above(window(), on_top);
 }
 
 void PanelBrowserWindowGtk::EnableResizeByMouse(bool enable) {
 }
 
+void PanelBrowserWindowGtk::UpdatePanelMinimizeRestoreButtonVisibility() {
+  GetPanelTitlebar()->UpdateMinimizeRestoreButtonVisibility();
+}
+
 gfx::Size PanelBrowserWindowGtk::WindowSizeFromContentSize(
     const gfx::Size& content_size) const {
   return gfx::Size(content_size.width() + frame_size_.width(),
                    content_size.height() + frame_size_.height());
 }
 
 gfx::Size PanelBrowserWindowGtk::ContentSizeFromWindowSize(
     const gfx::Size& window_size) const {
   return gfx::Size(window_size.width() - frame_size_.width(),
                    window_size.height() - frame_size_.height());
@@ skipping 185 matching lines @@
       break;
     case RESTORE_BUTTON:
       button = titlebar->unminimize_button();
       break;
     default:
       NOTREACHED();
       return false;
   }
   return gtk_widget_get_visible(button->widget());
 }