Added a unique command buffer ID for command buffers.

gpu/command_buffer/service/command_buffer_service_unittest.cc

Index: gpu/command_buffer/service/command_buffer_service_unittest.cc
diff --git a/gpu/command_buffer/service/command_buffer_service_unittest.cc b/gpu/command_buffer/service/command_buffer_service_unittest.cc
index 1113fa5bdd3467fddb269a57ca052ac908233437..d8770511df125839b7c5b3f63b4aa424daa4a9db 100644
--- a/gpu/command_buffer/service/command_buffer_service_unittest.cc
+++ b/gpu/command_buffer/service/command_buffer_service_unittest.cc
@@ -29,7 +29,9 @@ class CommandBufferServiceTest : public testing::Test {
       EXPECT_TRUE(manager->Initialize());
     }
     command_buffer_.reset(
-        new CommandBufferService(transfer_buffer_manager_.get()));
+        new CommandBufferService(transfer_buffer_manager_.get(),
+                                 kCommandBufferNamespace_InProcess,
+                                 0));
     EXPECT_TRUE(command_buffer_->Initialize());
   }