mus: Implement Window Server Capture

components/mus/access_policy.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 COMPONENTS_MUS_ACCESS_POLICY_H_
 #define COMPONENTS_MUS_ACCESS_POLICY_H_
 
 #include "components/mus/ids.h"
 #include "components/mus/public/interfaces/mus_constants.mojom.h"
 
@@ skipping 21 matching lines @@
   // Used when building a view tree (GetViewTree()) to decide if we should
   // descend into |view|.
   virtual bool CanDescendIntoViewForViewTree(const ServerView* view) const = 0;
   virtual bool CanEmbed(const ServerView* view,
                         uint32_t policy_bitmask) const = 0;
   virtual bool CanChangeViewVisibility(const ServerView* view) const = 0;
   virtual bool CanSetViewSurfaceId(const ServerView* view) const = 0;
   virtual bool CanSetViewBounds(const ServerView* view) const = 0;
   virtual bool CanSetViewProperties(const ServerView* view) const = 0;
   virtual bool CanSetViewTextInputState(const ServerView* view) const = 0;
+  virtual bool CanSetCapture(const ServerView* view) const = 0;
   virtual bool CanSetFocus(const ServerView* view) const = 0;
 
   // Returns whether the connection should notify on a hierarchy change.
   // |new_parent| and |old_parent| are initially set to the new and old parents
   // but may be altered so that the client only sees a certain set of views.
   virtual bool ShouldNotifyOnHierarchyChange(
       const ServerView* view,
       const ServerView** new_parent,
       const ServerView** old_parent) const = 0;
 
   // Returns the view to supply to the client when focus changes to |focused|.
   virtual const ServerView* GetViewForFocusChange(
       const ServerView* focused) = 0;
 };
 
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_ACCESS_POLICY_H_