Added a unique command buffer ID for command buffers.

gpu/command_buffer/service/command_buffer_service.h

 // Copyright (c) 2012 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 GPU_COMMAND_BUFFER_SERVICE_COMMAND_BUFFER_SERVICE_H_
 #define GPU_COMMAND_BUFFER_SERVICE_COMMAND_BUFFER_SERVICE_H_
 
 #include "base/callback.h"
 #include "gpu/command_buffer/common/command_buffer.h"
 #include "gpu/command_buffer/common/command_buffer_shared.h"
 
 namespace gpu {
 
 class TransferBufferManagerInterface;
 
 class GPU_EXPORT CommandBufferServiceBase : public CommandBuffer {
  public:
+  CommandBufferServiceBase(CommandBufferNamespace namespace_id,
+                           uint64_t command_buffer_id)
+    : CommandBuffer(namespace_id, command_buffer_id) {}
+
   // Sets the current get offset. This can be called from any thread.
   virtual void SetGetOffset(int32 get_offset) = 0;
 
   // Get the transfer buffer associated with an ID. Returns a null buffer for
   // ID 0.
   virtual scoped_refptr<gpu::Buffer> GetTransferBuffer(int32 id) = 0;
 
   // Allows the reader to update the current token value.
   virtual void SetToken(int32 token) = 0;
 
   // Allows the reader to set the current parse error.
   virtual void SetParseError(error::Error) = 0;
 
   // Allows the reader to set the current context lost reason.
   // NOTE: if calling this in conjunction with SetParseError,
   // call this first.
   virtual void SetContextLostReason(error::ContextLostReason) = 0;
 
   // Allows the reader to obtain the current put offset.
   virtual int32 GetPutOffset() = 0;
 };
 
 // An object that implements a shared memory command buffer and a synchronous
 // API to manage the put and get pointers.
 class GPU_EXPORT CommandBufferService : public CommandBufferServiceBase {
  public:
   typedef base::Callback<bool(int32)> GetBufferChangedCallback;
   explicit CommandBufferService(
-      TransferBufferManagerInterface* transfer_buffer_manager);
+      TransferBufferManagerInterface* transfer_buffer_manager,
+      CommandBufferNamespace namespace_id, uint64_t command_buffer_id);
   ~CommandBufferService() override;
 
   // CommandBuffer implementation:
   bool Initialize() override;
   State GetLastState() override;
   int32 GetLastToken() override;
   void Flush(int32 put_offset) override;
   void OrderingBarrier(int32 put_offset) override;
   void WaitForTokenInRange(int32 start, int32 end) override;
   void WaitForGetOffsetInRange(int32 start, int32 end) override;
@@ skipping 49 matching lines @@
   uint32 generation_;
   error::Error error_;
   error::ContextLostReason context_lost_reason_;
 
   DISALLOW_COPY_AND_ASSIGN(CommandBufferService);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_COMMAND_BUFFER_SERVICE_H_