SurfaceAggregator should check whether output is secure when drawin

ui/compositor/compositor.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 UI_COMPOSITOR_COMPOSITOR_H_
 #define UI_COMPOSITOR_COMPOSITOR_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 104 matching lines @@
   // Creates a Surface ID allocator with a new namespace.
   virtual std::unique_ptr<cc::SurfaceIdAllocator>
   CreateSurfaceIdAllocator() = 0;
 
   // Resize the display corresponding to this compositor to a particular size.
   virtual void ResizeDisplay(ui::Compositor* compositor,
                              const gfx::Size& size) = 0;
 
   virtual void SetAuthoritativeVSyncInterval(ui::Compositor* compositor,
                                              base::TimeDelta interval) = 0;
+
+  virtual void SetOutputIsSecure(Compositor* compositor, bool secure) = 0;
 };
 
 // This class represents a lock on the compositor, that can be used to prevent
 // commits to the compositor tree while we're waiting for an asynchronous
 // event. The typical use case is when waiting for a renderer to produce a frame
 // at the right size. The caller keeps a reference on this object, and drops the
 // reference once it desires to release the lock.
 // By default, the lock will be cancelled after a short timeout to ensure
 // responsiveness of the UI, so the compositor tree should be kept in a
 // "reasonable" state while the lock is held. If the compositor sets
@@ skipping 232 matching lines @@
   scoped_refptr<cc::AnimationTimeline> animation_timeline_;
 
   base::WeakPtrFactory<Compositor> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Compositor);
 };
 
 }  // namespace ui
 
 #endif  // UI_COMPOSITOR_COMPOSITOR_H_