Migrate WaitableEvent to enum-based constructor in components/

components/leveldb/leveldb_mojo_proxy.cc

Index: components/leveldb/leveldb_mojo_proxy.cc
diff --git a/components/leveldb/leveldb_mojo_proxy.cc b/components/leveldb/leveldb_mojo_proxy.cc
index 07622bd03ded64b99c02e0cfa992fe7ea29a38e0..96f2853e92aaaf98c84431aef8b1d29f70c59f74 100644
--- a/components/leveldb/leveldb_mojo_proxy.cc
+++ b/components/leveldb/leveldb_mojo_proxy.cc
@@ -144,7 +144,9 @@ void LevelDBMojoProxy::RunInternal(const base::Closure& task) {
   if (task_runner_->BelongsToCurrentThread()) {
     task.Run();
   } else {
-    base::WaitableEvent done_event(false, false);
+    base::WaitableEvent done_event(
+        base::WaitableEvent::ResetPolicy::AUTOMATIC,
+        base::WaitableEvent::InitialState::NOT_SIGNALED);
     task_runner_->PostTask(
         FROM_HERE,
         base::Bind(&LevelDBMojoProxy::DoOnOtherThread,