Revert "Delete CC."

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 <list>
+#include <vector>
+
+#include "base/containers/hash_tables.h"
+#include "base/macros.h"
+#include "base/observer_list.h"
+#include "base/threading/thread_checker.h"
+#include "cc/surfaces/surface_damage_observer.h"
+#include "cc/surfaces/surface_id.h"
+#include "cc/surfaces/surface_sequence.h"
+#include "cc/surfaces/surfaces_export.h"
+
+namespace cc {
+class CompositorFrame;
+class Surface;
+
+class CC_SURFACES_EXPORT SurfaceManager {
+ public:
+  SurfaceManager();
+  ~SurfaceManager();
+
+  void RegisterSurface(Surface* surface);
+  void DeregisterSurface(SurfaceId surface_id);
+
+  // Destroy the Surface once a set of sequence numbers has been satisfied.
+  void Destroy(scoped_ptr<Surface> surface);
+
+  Surface* GetSurfaceForId(SurfaceId surface_id);
+
+  void AddObserver(SurfaceDamageObserver* obs) {
+    observer_list_.AddObserver(obs);
+  }
+
+  void RemoveObserver(SurfaceDamageObserver* obs) {
+    observer_list_.RemoveObserver(obs);
+  }
+
+  bool SurfaceModified(SurfaceId surface_id);
+
+  // A frame for a surface satisfies a set of sequence numbers in a particular
+  // id namespace.
+  void DidSatisfySequences(uint32_t id_namespace,
+                           std::vector<uint32_t>* sequence);
+
+ private:
+  void SearchForSatisfaction();
+
+  typedef base::hash_map<SurfaceId, Surface*> SurfaceMap;
+  SurfaceMap surface_map_;
+  base::ObserverList<SurfaceDamageObserver> observer_list_;
+  base::ThreadChecker thread_checker_;
+
+  // List of surfaces to be destroyed, along with what sequences they're still
+  // waiting on.
+  typedef std::list<Surface*> SurfaceDestroyList;
+  SurfaceDestroyList surfaces_to_destroy_;
+
+  // Set of SurfaceSequences that have been satisfied by a frame but not yet
+  // waited on.
+  base::hash_set<SurfaceSequence> satisfied_sequences_;
+
+  DISALLOW_COPY_AND_ASSIGN(SurfaceManager);
+};
+
+}  // namespace cc
+
+#endif  // CC_SURFACES_SURFACE_MANAGER_H_