Re-land: content: Single process support for native GpuMemoryBuffers.

content/browser/in_process_io_surface_manager_mac.h

+// Copyright 2015 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_BROWSER_IN_PROCESS_IO_SURFACE_MANAGER_MAC_H_
+#define CONTENT_BROWSER_IN_PROCESS_IO_SURFACE_MANAGER_MAC_H_
+
+#include "base/containers/scoped_ptr_hash_map.h"
+#include "base/mac/scoped_mach_port.h"
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/singleton.h"
+#include "base/synchronization/lock.h"
+#include "content/common/mac/io_surface_manager.h"
+
+namespace content {
+
+class CONTENT_EXPORT InProcessIOSurfaceManager : public IOSurfaceManager {
+ public:
+  static InProcessIOSurfaceManager* GetInstance();
+
+  // Overridden from IOSurfaceManager:
+  bool RegisterIOSurface(int io_surface_id,
+                         int client_id,
+                         IOSurfaceRef io_surface) override;
+  void UnregisterIOSurface(int io_surface_id, int client_id) override;
+  IOSurfaceRef AcquireIOSurface(int io_surface_id) override;
+
+ private:
+  friend struct DefaultSingletonTraits<InProcessIOSurfaceManager>;
+
+  InProcessIOSurfaceManager();
+  ~InProcessIOSurfaceManager() override;
+
+  using IOSurfaceMap =
+      base::ScopedPtrHashMap<int, scoped_ptr<base::mac::ScopedMachSendRight>>;
+  IOSurfaceMap io_surfaces_;
+  base::Lock lock_;
+
+  DISALLOW_COPY_AND_ASSIGN(InProcessIOSurfaceManager);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_IN_PROCESS_IO_SURFACE_MANAGER_MAC_H_