Moving app_view to extensions.

extensions/browser/guest_view/app_view/app_view_guest_delegate.h

+// Copyright 2014 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 EXTENSIONS_BROWSER_GUEST_VIEW_APP_VIEW_APP_VIEW_GUEST_DELEGATE_H_
+#define EXTENSIONS_BROWSER_GUEST_VIEW_APP_VIEW_APP_VIEW_GUEST_DELEGATE_H_
+
+namespace content {
+struct ContextMenuParams;
+class WebContents;
+}
+
+namespace extensions {
+// Interface to handle communication between AppView (in extensions) with the
+// browser.
+class AppViewGuestDelegate {
+ public:
+  virtual ~AppViewGuestDelegate();
+
+  // Shows the context menu for the guest.
+  // Returns true if the context menu was handled.
+  virtual bool HandleContextMenu(content::WebContents* web_contents,
+                                 const content::ContextMenuParams& params) = 0;
+};
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_BROWSER_GUEST_VIEW_APP_VIEW_APP_VIEW_GUEST_DELEGATE_H_