Replaced cc::SurfaceId::nonce_ with base::UnguessableToken

cc/surfaces/surface_manager.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 CC_SURFACES_SURFACE_MANAGER_H_
 #define CC_SURFACES_SURFACE_MANAGER_H_
 
 #include <stdint.h>
 
 #include <list>
@@ skipping 12 matching lines @@
 #include "cc/surfaces/surfaces_export.h"
 
 namespace cc {
 class BeginFrameSource;
 class CompositorFrame;
 class Surface;
 class SurfaceFactoryClient;
 
 class CC_SURFACES_EXPORT SurfaceManager {
  public:
-  // Root SurfaceId that references display root surfaces. There is no Surface
-  // with this id, it's for bookkeeping purposes only.
-  static const SurfaceId kRootSurfaceId;
-
   SurfaceManager();
   ~SurfaceManager();
 
   void RegisterSurface(Surface* surface);
   void DeregisterSurface(const SurfaceId& surface_id);
 
   // Destroy the Surface once a set of sequence numbers has been satisfied.
   void Destroy(std::unique_ptr<Surface> surface);
 
   Surface* GetSurfaceForId(const SurfaceId& surface_id);
@@ skipping 68 matching lines @@
 
   // Register a relationship between two namespaces.  This relationship means
   // that surfaces from the child namespace will be displayed in the parent.
   // Children are allowed to use any begin frame source that their parent can
   // use.
   void RegisterFrameSinkHierarchy(const FrameSinkId& parent_frame_sink_id,
                                   const FrameSinkId& child_frame_sink_id);
   void UnregisterFrameSinkHierarchy(const FrameSinkId& parent_frame_sink_id,
                                     const FrameSinkId& child_frame_sink_id);
 
+  const SurfaceId& GetRootSurfaceId() { return kRootSurfaceId; }
+
  private:
   void RecursivelyAttachBeginFrameSource(const FrameSinkId& frame_sink_id,
                                          BeginFrameSource* source);
   void RecursivelyDetachBeginFrameSource(const FrameSinkId& frame_sink_id,
                                          BeginFrameSource* source);
   // Returns true if |child namespace| is or has |search_frame_sink_id| as a
   // child.
   bool ChildContains(const FrameSinkId& child_frame_sink_id,
                      const FrameSinkId& search_frame_sink_id) const;
 
@@ skipping 49 matching lines @@
   // Tracks references from the parent surface to child surface. Is the inverse
   // of |child_to_parent_refs_|.
   std::unordered_map<SurfaceId, SurfaceIdSet, SurfaceIdHash>
       parent_to_child_refs_;
 
   // Set of which sources are registered to which namespace.  Any child
   // that is implicitly using this namespace must be reachable by the
   // parent in the dag.
   std::unordered_map<BeginFrameSource*, FrameSinkId> registered_sources_;
 
+  // Root SurfaceId that references display root surfaces. There is no Surface
+  // with this id, it's for bookkeeping purposes only.
+  const SurfaceId kRootSurfaceId;
+
   DISALLOW_COPY_AND_ASSIGN(SurfaceManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_SURFACES_SURFACE_MANAGER_H_