Sample code: IPC Transport object for GPU

content/gpu/gpu_memory_buffer_service_ipc_transport.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_GPU_GPU_MEMORY_BUFFER_SERVICE_IPC_TRANSPORT_H_
+#define CONTENT_GPU_GPU_MEMORY_BUFFER_SERVICE_IPC_TRANSPORT_H_
+
+namespace gfx {
+struct GpuMemoryBufferHandle;
+}
+
+namespace content {
+
+struct CreateGpuMemoryBufferFromHandleParams;
+struct CreateGpuMemoryBufferParams;
+
+class GpuMemoryBufferServiceIPCTransport {
+ public:
+  class Client {
+   public:
+    virtual void OnConnectionClosed() = 0;
+
+    virtual void OnCreateGpuMemoryBuffer(
+        const CreateGpuMemoryBufferParams& params) = 0;
+
+    virtual void OnCreateGpuMemoryBufferFromHandle(
+        const CreateGpuMemoryBufferFromHandleParams& params) = 0;
+
+   protected:
+    virtual ~Client() {}
+  };
+
+  virtual ~GpuMemoryBufferServiceIPCTransport() {}
+
+  virtual bool GpuMemoryBufferCreated(
+      const gfx::GpuMemoryBufferHandle& handle) = 0;
+
+  virtual void SetClient(Client* client) = 0;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_GPU_GPU_MEMORY_BUFFER_SERVICE_IPC_TRANSPORT_H_