content: Refactor ChildThreadImpl::Options

content/child/child_thread_impl.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/child/child_thread_impl.h"
 
 #include <signal.h>
 
 #include <string>
 
@@ skipping 192 matching lines @@
   return ChildThreadImpl::current();
 }
 
 ChildThreadImpl::Options::Options()
     : channel_name(base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           switches::kProcessChannelID)),
       use_mojo_channel(false),
       in_browser_process(false) {
 }
 
-ChildThreadImpl::Options::Options(bool mojo)
-    : channel_name(base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
-          switches::kProcessChannelID)),
-      use_mojo_channel(mojo),
-      in_browser_process(true) {
-}
-
-ChildThreadImpl::Options::Options(std::string name, bool mojo)
-    : channel_name(name), use_mojo_channel(mojo), in_browser_process(true) {
-}
-
 ChildThreadImpl::Options::~Options() {
 }
 
+ChildThreadImpl::Options::Builder::Builder() {
+}
+
+ChildThreadImpl::Options::Builder&
+ChildThreadImpl::Options::Builder::InBrowserProcess(bool in_browser_process) {
+  options_.in_browser_process = in_browser_process;
+  return *this;
+}
+
+ChildThreadImpl::Options::Builder& ChildThreadImpl::Options::Builder::WithMojo(
+    bool mojo) {
+  options_.use_mojo_channel = mojo;
+  return *this;
+}
+
+ChildThreadImpl::Options::Builder&
+ChildThreadImpl::Options::Builder::WithChannelName(
+    const std::string& channel_name) {
+  options_.channel_name = channel_name;
+  return *this;
+}
+
+ChildThreadImpl::Options ChildThreadImpl::Options::Builder::Build() {
+  return options_;
+}
+
 ChildThreadImpl::ChildThreadMessageRouter::ChildThreadMessageRouter(
     IPC::Sender* sender)
     : sender_(sender) {}
 
 bool ChildThreadImpl::ChildThreadMessageRouter::Send(IPC::Message* msg) {
   return sender_->Send(msg);
 }
 
 ChildThreadImpl::ChildThreadImpl()
     : router_(this),
@@ skipping 426 matching lines @@
   // doesn't cause such issues. TODO(gab): Remove this once the experiment is
   // over (http://crbug.com/458594).
   base::FieldTrial* trial =
       base::FieldTrialList::Find("BackgroundRendererProcesses");
   if (trial && trial->group_name() == "AllowBackgroundModeFromRenderer")
     base::Process::Current().SetProcessBackgrounded(background);
 #endif  // OS_WIN
 }
 
 }  // namespace content