Need to create a fake client ime delegate.

[FATAL:ime_feature.cc(41)] Check failed: delegate_. 
#0 0x7fd38ec74fee base::debug::StackTrace::StackTrace()
#1 0x7fd38ecd75ff logging::LogMessage::~LogMessage()
#2 0x000000438dc4 blimp::client::ImeFeature::ProcessMessage()
#3 0x7fd38f1e690d blimp::(anonymous namespace)::DispatchProcessMessage()
#4 0x7fd38f1e8837 _ZN4base8internal15RunnableAdapterIPFvNS_7WeakPtrIN5blimp22BlimpMessageThreadPipeEEESt10unique_ptrINS3_12BlimpMessageESt14default_deleteIS7_EERKNS_8CallbackIFviELNS0_8CopyModeE1EEEEE3RunIJRKS5_SA_SG_EEEvDpOT_
#5 0x7fd38f1e872f _ZN4base8internal12InvokeHelperILb0EvNS0_15RunnableAdapterIPFvNS_7WeakPtrIN5blimp22BlimpMessageThreadPipeEEESt10unique_ptrINS4_12BlimpMessageESt14default_deleteIS8_EERKNS_8CallbackIFviELNS0_8CopyModeE1EEEEEEE8MakeItSoIJRKS6_SB_SH_EEEvSK_DpOT_
#6 0x7fd38f1e86ce _ZN4base8internal7InvokerINS_13IndexSequenceIJLm0ELm1ELm2EEEENS0_9BindStateINS0_15RunnableAdapterIPFvNS_7WeakPtrIN5blimp22BlimpMessageThreadPipeEEESt10unique_ptrINS7_12BlimpMessageESt14default_deleteISB_EERKNS_8CallbackIFviELNS0_8CopyModeE1EEEEEESL_JRS9_NS0_13PassedWrapperISE_EERSI_EEENS0_12InvokeHelperILb0EvSN_EEFvvEE3RunEPNS0_13BindStateBaseE
#7 0x7fd38ec551ce base::Callback<>::Run()
#8 0x7fd38ec7aa3e base::debug::TaskAnnotator::RunTask()
#9 0x7fd38ecf495c base::MessageLoop::RunTask()
#10 0x7fd38ecf4bf8 base::MessageLoop::DeferOrRunPendingTask()
#11 0x7fd38ecf4e52 base::MessageLoop::DoWork()
#12 0x7fd38ed0c69c base::MessagePumpGlib::HandleDispatch()
#13 0x7fd38ed0ce61 base::(anonymous namespace)::WorkSourceDispatch()
#14 0x7fd383319e04 g_main_context_dispatch
#15 0x7fd38331a048 <unknown>
#16 0x7fd38331a0ec g_main_context_iteration
#17 0x7fd38ed0c79f base::MessagePumpGlib::Run()
#18 0x7fd38ecf434f base::MessageLoop::RunHandler()
#19 0x7fd38ed9be74 base::RunLoop::Run()
#20 0x00000041c37a main
#21 0x7fd381713ec5 __libc_start_main
#22 0x000000418ca9 <unknown>