arc-bridge: Split ArcBridgeService to common part and IPC based impl.

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index c69f48f96b454a453d24dbf853b515ce1ce4b0d0..9a1c03b86857d74e52831a18e59ac94d2f0af824 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -388,11 +388,13 @@ void ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun() {
 
   wake_on_wifi_manager_.reset(new WakeOnWifiManager());
 
-  arc_bridge_service_.reset(new arc::ArcBridgeService(
-      content::BrowserThread::GetMessageLoopProxyForThread(
-          content::BrowserThread::IO),
-      content::BrowserThread::GetMessageLoopProxyForThread(
-          content::BrowserThread::FILE)));
+  arc_bridge_service_ =
+      arc::ArcBridgeService::Create(

[hidehiko, 2015/11/26 02:21:51]

nit: std::move

[khmel1, 2015/11/26 05:46:42]

Done, BTW why this is preferred?

+          content::BrowserThread::GetMessageLoopProxyForThread(
+              content::BrowserThread::IO),
+          content::BrowserThread::GetMessageLoopProxyForThread(
+              content::BrowserThread::FILE))
+          .Pass();
   arc_bridge_service_->DetectAvailability();
 
   ChromeBrowserMainPartsLinux::PreMainMessageLoopRun();