Add detached mode plumbing

content/common/gpu/ca_layer_tree_mac.h

 // Copyright 2016 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 CONTENT_COMMON_GPU_CA_LAYER_TREE_MAC_H_
 #define CONTENT_COMMON_GPU_CA_LAYER_TREE_MAC_H_
 
 #include <IOSurface/IOSurface.h>
 #include <QuartzCore/QuartzCore.h>
 #include <deque>
@@ skipping 35 matching lines @@
                        unsigned background_color,
                        unsigned edge_aa_mask,
                        float opacity);
 
   // Create a CALayer tree for the scheduled layers, and set |superlayer| to
   // have only this tree as its sublayers. If |old_tree| is non-null, then try
   // to re-use the CALayers of |old_tree| as much as possible. |old_tree| will
   // be destroyed at the end of the function, and any CALayers in it which were
   // not re-used by |this| will be removed from the CALayer hierarchy.
   void CommitScheduledCALayers(CALayer* superlayer,
+                               bool* use_detached_video_layer,
+                               AVSampleBufferDisplayLayer* detached_video_layer,
                                scoped_ptr<CALayerTree> old_tree,
                                float scale_factor);
 
  private:
   struct RootLayer;
   struct ClipAndSortingLayer;
   struct TransformLayer;
   struct ContentLayer;
 
   struct RootLayer {
@@ skipping 127 matching lines @@
   float scale_factor_ = 1;
   bool has_committed_ = false;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CALayerTree);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_CA_LAYER_TREE_MAC_H_