Move GuestView layer in browser to components

components/guest_view/browser/guest_view_manager_delegate.h

 // Copyright 2015 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_GUEST_VIEW_MANAGER_DELEGATE_H_
-#define EXTENSIONS_BROWSER_GUEST_VIEW_GUEST_VIEW_MANAGER_DELEGATE_H_
+#ifndef COMPONENTS_GUEST_VIEW_BROWSER_GUEST_VIEW_MANAGER_DELEGATE_H_
+#define COMPONENTS_GUEST_VIEW_BROWSER_GUEST_VIEW_MANAGER_DELEGATE_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 
 namespace base {
 class DictionaryValue;
 }  // namespace base
 
-namespace extensions {
+namespace guestview {
+
 class GuestViewBase;
-}  // namespace extensions
-
-namespace guestview {
 
 // A GuestViewManagerDelegate interface allows GuestViewManager to delegate
 // responsibilities to other modules in Chromium. Different builds of Chromium
 // may use different GuestViewManagerDelegate implementations. For example,
 // mobile builds of Chromium do not include an extensions module and so
 // permission checks would be different, and IsOwnedByExtension would always
 // return false.
 class GuestViewManagerDelegate {
  public:
-  virtual ~GuestViewManagerDelegate() {}
+  GuestViewManagerDelegate();
+  virtual ~GuestViewManagerDelegate();
 
   // Dispatches the event with |name| with the provided |args| to the embedder
   // of the given |guest| with |instance_id| for routing.
   virtual void DispatchEvent(const std::string& event_name,
                              scoped_ptr<base::DictionaryValue> args,
-                             extensions::GuestViewBase* guest,
-                             int instance_id) = 0;
+                             GuestViewBase* guest,
+                             int instance_id) {}
 
   // Indicates whether the |guest| can be used within the context of where it
   // was created.
-  virtual bool IsGuestAvailableToContext(extensions::GuestViewBase* guest) = 0;
+  virtual bool IsGuestAvailableToContext(GuestViewBase* guest);
 
   // Indicates whether the |guest| is owned by an extension or Chrome App.
-  virtual bool IsOwnedByExtension(extensions::GuestViewBase* guest) = 0;
+  virtual bool IsOwnedByExtension(GuestViewBase* guest);
 
   // Registers additional GuestView types the delegator (GuestViewManger) can
   // create.
-  virtual void RegisterAdditionalGuestViewTypes() = 0;
+  virtual void RegisterAdditionalGuestViewTypes() {}
 };
 
 }  // namespace guestview
 
-#endif  // EXTENSIONS_BROWSER_GUEST_VIEW_GUEST_VIEW_MANAGER_DELEGATE_H_
+#endif  // COMPONENTS_GUEST_VIEW_BROWSER_GUEST_VIEW_MANAGER_DELEGATE_H_