Add tests for panel app icon functionaility.

chrome/browser/ui/panels/native_panel.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_PANELS_NATIVE_PANEL_H_
 #define CHROME_BROWSER_UI_PANELS_NATIVE_PANEL_H_
 
 #include "chrome/browser/ui/panels/panel.h"
 #include "ui/gfx/native_widget_types.h"
 
 class NativePanelTesting;
 
 namespace content {
 struct NativeWebKeyboardEvent;
 class WebContents;
 }
 
 namespace gfx {
 class Rect;
 }  // namespace gfx
 
 // An interface for a class that implements platform-specific behavior for panel
 // windows to provide additional methods not found in BaseWindow.
 class NativePanel {
   friend class BasePanelBrowserTest;  // for CreateNativePanelTesting
   friend class Panel;
   friend class PanelBrowserWindow;
   friend class PanelBrowserTest;
+  friend class PanelExtensionBrowserTest;
 
  protected:
   virtual ~NativePanel() {}
 
   virtual void ShowPanel() = 0;
   virtual void ShowPanelInactive() = 0;
   virtual gfx::Rect GetPanelBounds() const = 0;
   virtual void SetPanelBounds(const gfx::Rect& bounds) = 0;
   virtual void SetPanelBoundsInstantly(const gfx::Rect& bounds) = 0;
   virtual void ClosePanel() = 0;
@@ skipping 64 matching lines @@
   virtual void DragTitlebar(const gfx::Point& mouse_location) = 0;
   virtual void CancelDragTitlebar() = 0;
   virtual void FinishDragTitlebar() = 0;
 
   // Verifies, on a deepest possible level, if the Panel is showing the "Draw
   // Attention" effects to the user. May include checking colors etc.
   virtual bool VerifyDrawingAttention() const = 0;
   // Verifies, on a deepest possible level, if the native panel is really
   // active, i.e. the titlebar is painted per its active state.
   virtual bool VerifyActiveState(bool is_active) = 0;
+  // Verifies, on a deepest possible level, if the native panel is really
+  // showing a correct app icon (taskbar icon).
+  virtual bool VerifyAppIcon() const = 0;
   virtual void WaitForWindowCreationToComplete() const { }
 
   virtual bool IsWindowSizeKnown() const = 0;
   virtual bool IsAnimatingBounds() const = 0;
   virtual bool IsButtonVisible(panel::TitlebarButtonType button_type) const = 0;
 };
 
 #endif  // CHROME_BROWSER_UI_PANELS_NATIVE_PANEL_H_