Manual refactor of few more stragglers to enum-based WaitableEvent constructor.

base/mac/mach_port_broker_unittest.cc

Index: base/mac/mach_port_broker_unittest.cc
diff --git a/base/mac/mach_port_broker_unittest.cc b/base/mac/mach_port_broker_unittest.cc
index c15afb68fd1f244261b3c7c460d843b44e5b3c87..bff8eb6a9bc946d9e46e04c007b7d8d52fbc66c2 100644
--- a/base/mac/mach_port_broker_unittest.cc
+++ b/base/mac/mach_port_broker_unittest.cc
@@ -23,7 +23,8 @@ class MachPortBrokerTest : public testing::Test,
  public:
   MachPortBrokerTest()
       : broker_(kBootstrapPortName),
-        event_(true, false),
+        event_(base::WaitableEvent::ResetPolicy::MANUAL,
+               base::WaitableEvent::InitialState::NOT_SIGNALED),
         received_process_(kNullProcessHandle) {
     broker_.AddObserver(this);
   }