Add WebContentsModalDialogManager unit tests

components/web_modal/web_contents_modal_dialog_manager.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 COMPONENTS_WEB_MODAL_WEB_CONTENTS_MODAL_DIALOG_MANAGER_H_
 #define COMPONENTS_WEB_MODAL_WEB_CONTENTS_MODAL_DIALOG_MANAGER_H_
 
 #include <deque>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 20 matching lines @@
   WebContentsModalDialogManagerDelegate* delegate() const { return delegate_; }
   void SetDelegate(WebContentsModalDialogManagerDelegate* d);
 
   static NativeWebContentsModalDialogManager* CreateNativeManager(
       NativeWebContentsModalDialogManagerDelegate* native_delegate);
 
   // Shows the dialog as a web contents modal dialog. The dialog will notify via
   // WillClose() when it is being destroyed.
   void ShowDialog(NativeWebContentsModalDialog dialog);
 
-  // Returns true if a dialog is currently being shown.
+  // Returns true if any dialogs are active and not closed.
+  // TODO(wittman): Give this a better name, since it can return true if no
+  // dialogs are displayed.
   bool IsShowingDialog() const;
 
   // Focus the topmost modal dialog.  IsShowingDialog() must be true when
   // calling this function.
   void FocusTopmostDialog();
 
   // Overriden from NativeWebContentsModalDialogManagerDelegate:
   virtual content::WebContents* GetWebContents() const OVERRIDE;
   // Called when a WebContentsModalDialogs we own is about to be closed.
   virtual void WillClose(NativeWebContentsModalDialog dialog) OVERRIDE;
@@ skipping 55 matching lines @@
 
   // A scoped container for notification registries.
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsModalDialogManager);
 };
 
 }  // namespace web_modal
 
 #endif  // COMPONENTS_WEB_MODAL_WEB_CONTENTS_MODAL_DIALOG_MANAGER_H_