Temporarily disables metric reporting from service process on MAC.

chrome/browser/service_process/service_process_control.cc

Index: chrome/browser/service_process/service_process_control.cc
diff --git a/chrome/browser/service_process/service_process_control.cc b/chrome/browser/service_process/service_process_control.cc
index c6eae8471ef531c31cda327e979838a51e61f6af..8b7342c3352a9c94475e3b0c49881c5755da8652 100644
--- a/chrome/browser/service_process/service_process_control.cc
+++ b/chrome/browser/service_process/service_process_control.cc
@@ -281,6 +281,11 @@ bool ServiceProcessControl::GetHistograms(
   DCHECK(!histograms_callback.is_null());
   histograms_callback_.Reset();
 
+#if defined(OS_MACOSX)
+  // TODO(vitalybuka): Investigate why it crashes MAC http://crbug.com/406227.
+  return false;
+#endif  // OS_MACOSX
+
   // If the service process is already running then connect to it.
   if (!CheckServiceProcessReady())
     return false;