Move mojo::{Wait,WaitMany}() to (the newly-added) mojo/public/cpp/system/wait.h.

mojo/message_pump/message_pump_mojo.cc

 // Copyright 2013 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 "mojo/message_pump/message_pump_mojo.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/debug/alias.h"
 #include "base/logging.h"
 #include "base/threading/thread_local.h"
 #include "base/time/time.h"
 #include "mojo/message_pump/message_pump_mojo_handler.h"
 #include "mojo/message_pump/time_helper.h"
+#include "mojo/public/cpp/system/wait.h"
 
 namespace mojo {
 namespace common {
 namespace {
 
 base::ThreadLocalPointer<MessagePumpMojo>* CurrentPump() {
   static auto* tls = new base::ThreadLocalPointer<MessagePumpMojo>;
   return tls;
 }
 
@@ skipping 297 matching lines @@
 void MessagePumpMojo::WillSignalHandler() {
   FOR_EACH_OBSERVER(Observer, observers_, WillSignalHandler());
 }
 
 void MessagePumpMojo::DidSignalHandler() {
   FOR_EACH_OBSERVER(Observer, observers_, DidSignalHandler());
 }
 
 }  // namespace common
 }  // namespace mojo