Migrate WaitableEvent to enum-based constructor in ppapi/

ppapi/proxy/video_encoder_resource_unittest.cc

 // Copyright 2015 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 "ppapi/proxy/video_encoder_resource.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 15 matching lines @@
 
 using ppapi::proxy::ResourceMessageTestSink;
 
 namespace ppapi {
 namespace proxy {
 
 namespace {
 
 class MockCompletionCallback {
  public:
-  MockCompletionCallback() : called_(false), call_event_(false, false) {}
+  MockCompletionCallback()
+      : called_(false),
+        call_event_(base::WaitableEvent::ResetPolicy::AUTOMATIC,
+                    base::WaitableEvent::InitialState::NOT_SIGNALED) {}
 
   bool called() { return called_; }
   int32_t result() { return result_; }
 
   void WaitUntilCalled() { call_event_.Wait(); }
 
   void Reset() {
     called_ = false;
     call_event_.Reset();
   }
@@ skipping 1098 matching lines @@
     ResourceMessageCallParams params;
     uint32_t frame_id;
     bool force_frame;
     ASSERT_TRUE(CheckEncodeMsg(&params, &frame_id, &force_frame));
     SendEncodeReply(params, frame_id);
   }
 }
 
 }  // namespace proxy
 }  // namespace ppapi