Change the visual appearance of panel on GTK per new UI design.

chrome/browser/ui/panels/panel_browser_view.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_view.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "chrome/browser/native_window_notification_source.h"
 #include "chrome/browser/ui/browser_window.h"
@@ skipping 595 matching lines @@
       const gfx::Point& mouse_location, panel::ClickModifier modifier) OVERRIDE;
   virtual void ReleaseMouseButtonTitlebar(
       panel::ClickModifier modifier) OVERRIDE;
   virtual void DragTitlebar(const gfx::Point& mouse_location) OVERRIDE;
   virtual void CancelDragTitlebar() OVERRIDE;
   virtual void FinishDragTitlebar() OVERRIDE;
   virtual bool VerifyDrawingAttention() const OVERRIDE;
   virtual bool VerifyActiveState(bool is_active) OVERRIDE;
   virtual bool IsWindowSizeKnown() const OVERRIDE;
   virtual bool IsAnimatingBounds() const OVERRIDE;
-  virtual bool IsButtonVisible(TitlebarButtonType button_type) const OVERRIDE;
+  virtual bool IsButtonVisible(
+      panel::TitlebarButtonType button_type) const OVERRIDE;
 
   PanelBrowserView* panel_browser_view_;
 };
 
 // static
 NativePanelTesting* NativePanelTesting::Create(NativePanel* native_panel) {
   return new NativePanelTestingWin(static_cast<PanelBrowserView*>(
       native_panel));
 }
 
@@ skipping 39 matching lines @@
 
 bool NativePanelTestingWin::IsWindowSizeKnown() const {
   return true;
 }
 
 bool NativePanelTestingWin::IsAnimatingBounds() const {
   return panel_browser_view_->IsAnimatingBounds();
 }
 
 bool NativePanelTestingWin::IsButtonVisible(
-    TitlebarButtonType button_type) const {
+    panel::TitlebarButtonType button_type) const {
   PanelBrowserFrameView* frame_view = panel_browser_view_->GetFrameView();
 
   switch (button_type) {
-    case CLOSE_BUTTON:
+    case panel::CLOSE_BUTTON:
       return frame_view->close_button_->visible();
-    case MINIMIZE_BUTTON:
+    case panel::MINIMIZE_BUTTON:
       return frame_view->minimize_button_->visible();
-    case RESTORE_BUTTON:
+    case panel::RESTORE_BUTTON:
       return frame_view->restore_button_->visible();
     default:
       NOTREACHED();
   }
   return false;
 }