EDK: Make ConnectionManagerTest not use base::MessageLoop/RunLoop.

mojo/edk/base_edk/platform_message_loop_impl.cc

Index: mojo/edk/base_edk/platform_message_loop_impl.cc
diff --git a/mojo/edk/base_edk/platform_message_loop_impl.cc b/mojo/edk/base_edk/platform_message_loop_impl.cc
index d8752ce4c2e4c1013693df54b8cd34cc16e85789..717d634dd912147d01663a7167543113ac7113ad 100644
--- a/mojo/edk/base_edk/platform_message_loop_impl.cc
+++ b/mojo/edk/base_edk/platform_message_loop_impl.cc
@@ -39,6 +39,10 @@ void PlatformMessageLoopImpl::QuitWhenIdle() {
   base_message_loop_.QuitWhenIdle();
 }
 
+void PlatformMessageLoopImpl::QuitNow() {
+  base_message_loop_.QuitNow();
+}
+
 const RefPtr<TaskRunner>& PlatformMessageLoopImpl::GetTaskRunner() const {
   return task_runner_;
 }