Add missing (and remove superfluous) 'explicit' from constructors.

content/app/content_main_runner.cc

 // Copyright (c) 2012 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 "content/public/app/content_main_runner.h"
 
 #include <stdlib.h>
 
 #include "base/allocator/allocator_extension.h"
 #include "base/at_exit.h"
@@ skipping 168 matching lines @@
 // Completes the Mach IPC handshake by sending this process' task port to the
 // parent process.  The parent is listening on the Mach port given by
 // |GetMachPortName()|.  The task port is used by the parent to get CPU/memory
 // stats to display in the task manager.
 void SendTaskPortToParentProcess() {
   const mach_msg_timeout_t kTimeoutMs = 100;
   const int32_t kMessageId = 0;
   std::string mach_port_name = MachBroker::GetMachPortName();
 
   base::MachSendMessage child_message(kMessageId);
-  if (!child_message.AddDescriptor(mach_task_self())) {
-    LOG(ERROR) << "child AddDescriptor(mach_task_self()) failed.";
+  base::MachMsgPortDescriptor descriptor(mach_task_self());
+  if (!child_message.AddDescriptor(descriptor)) {
+    LOG(ERROR) << "child AddDescriptor(descriptor)) failed.";
     return;
   }
 
   base::MachPortSender child_sender(mach_port_name.c_str());
   kern_return_t err = child_sender.SendMessage(child_message, kTimeoutMs);
   if (err != KERN_SUCCESS) {
     LOG(ERROR) << StringPrintf("child SendMessage() failed: 0x%x %s", err,
                                mach_error_string(err));
   }
 }
@@ skipping 611 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ContentMainRunnerImpl);
 };
 
 // static
 ContentMainRunner* ContentMainRunner::Create() {
   return new ContentMainRunnerImpl();
 }
 
 }  // namespace content