Migrate WaitableEvent to enum-based constructor in net/

net/proxy/multi_threaded_proxy_resolver_unittest.cc

Index: net/proxy/multi_threaded_proxy_resolver_unittest.cc
diff --git a/net/proxy/multi_threaded_proxy_resolver_unittest.cc b/net/proxy/multi_threaded_proxy_resolver_unittest.cc
index 96dae158bd6c2cb780ac8ea4ec3a96ff6e9ead46..a97041735949bdef00aef7a1f4013ddfdde6ea33 100644
--- a/net/proxy/multi_threaded_proxy_resolver_unittest.cc
+++ b/net/proxy/multi_threaded_proxy_resolver_unittest.cc
@@ -99,9 +99,10 @@ class BlockableProxyResolver : public MockProxyResolver {
  public:
   BlockableProxyResolver()
       : should_block_(false),
-        unblocked_(true, true),
-        blocked_(true, false) {
-  }
+        unblocked_(base::WaitableEvent::ResetPolicy::MANUAL,
+                   base::WaitableEvent::InitialState::SIGNALED),
+        blocked_(base::WaitableEvent::ResetPolicy::MANUAL,
+                 base::WaitableEvent::InitialState::NOT_SIGNALED) {}
 
   void Block() {
     should_block_ = true;