Fix up mac test client and simple host for remoting.

remoting/host/simple_host_process.cc

Index: remoting/host/simple_host_process.cc
diff --git a/remoting/host/simple_host_process.cc b/remoting/host/simple_host_process.cc
index 289da0f7a4f68f9e6225fd0e28fa84fef21990db..38eb8e09a5b5345cf8f12a82cabd0b5053daac9a 100644
--- a/remoting/host/simple_host_process.cc
+++ b/remoting/host/simple_host_process.cc
@@ -26,6 +26,7 @@
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "base/nss_util.h"
 #include "base/path_service.h"
+#include "base/test/mock_chrome_application_mac.h"
 #include "base/threading/thread.h"
 #include "media/base/media.h"
 #include "remoting/base/tracer.h"
@@ -154,6 +155,10 @@ int main(int argc, char** argv) {
     host->set_protocol_config(config.release());
   }
 
+#if defined(OS_MACOSX)
+  mock_cr_app::RegisterMockCrApp();
+#endif  // OS_MACOSX
+
   // Let the chromoting host run until the shutdown task is executed.
   MessageLoop message_loop(MessageLoop::TYPE_UI);
   host->Start(NewRunnableFunction(&ShutdownTask, &message_loop));