Rewrite references to "wtf/" to "platform/wtf/" in the rest of platform/.

third_party/WebKit/Source/platform/WaitableEvent.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/WaitableEvent.h"
 
+#include <vector>
 #include "base/synchronization/waitable_event.h"
 #include "platform/heap/SafePoint.h"
 #include "platform/heap/ThreadState.h"
-#include "wtf/Optional.h"
-#include "wtf/PtrUtil.h"
-#include <vector>
+#include "platform/wtf/Optional.h"
+#include "platform/wtf/PtrUtil.h"
 
 namespace blink {
 
 WaitableEvent::WaitableEvent(ResetPolicy policy, InitialState state) {
   impl_ = WTF::WrapUnique(new base::WaitableEvent(
       policy == ResetPolicy::kManual
           ? base::WaitableEvent::ResetPolicy::MANUAL
           : base::WaitableEvent::ResetPolicy::AUTOMATIC,
       state == InitialState::kSignaled
           ? base::WaitableEvent::InitialState::SIGNALED
@@ skipping 18 matching lines @@
   std::vector<base::WaitableEvent*> base_events;
   for (size_t i = 0; i < events.size(); ++i)
     base_events.push_back(events[i]->impl_.get());
   size_t idx =
       base::WaitableEvent::WaitMany(base_events.data(), base_events.size());
   DCHECK_LT(idx, events.size());
   return idx;
 }
 
 }  // namespace blink