Added a unique command buffer ID for command buffers.

gpu/command_buffer/service/command_buffer_service.cc

Index: gpu/command_buffer/service/command_buffer_service.cc
diff --git a/gpu/command_buffer/service/command_buffer_service.cc b/gpu/command_buffer/service/command_buffer_service.cc
index 0ea4b54e2cfe77f84eb58b001cd2f7240633639c..32899161b6f642b8f77bf5433db009992763a4f0 100644
--- a/gpu/command_buffer/service/command_buffer_service.cc
+++ b/gpu/command_buffer/service/command_buffer_service.cc
@@ -17,8 +17,10 @@ using ::base::SharedMemory;
 namespace gpu {
 
 CommandBufferService::CommandBufferService(
-    TransferBufferManagerInterface* transfer_buffer_manager)
-    : ring_buffer_id_(-1),
+    TransferBufferManagerInterface* transfer_buffer_manager,
+    CommandBufferNamespace namespace_id, uint64_t command_buffer_id)
+    : CommandBufferServiceBase(namespace_id, command_buffer_id),
+      ring_buffer_id_(-1),
       shared_state_(NULL),
       num_entries_(0),
       get_offset_(0),