Remove 'content' dependency from device/media_transfer_protocol

chrome/browser/chrome_browser_main_linux.cc

Index: chrome/browser/chrome_browser_main_linux.cc
diff --git a/chrome/browser/chrome_browser_main_linux.cc b/chrome/browser/chrome_browser_main_linux.cc
index ec39b182b0f2b30570e7f584381022b3f3b66aa0..d9fa5015f7836e1d9c56511f1b1f3d79fc809893 100644
--- a/chrome/browser/chrome_browser_main_linux.cc
+++ b/chrome/browser/chrome_browser_main_linux.cc
@@ -4,11 +4,13 @@
 
 #include "chrome/browser/chrome_browser_main_linux.h"
 
+#include "base/message_loop_proxy.h"
 #include "chrome/browser/system_monitor/media_transfer_protocol_device_observer_linux.h"
 #include "device/media_transfer_protocol/media_transfer_protocol_manager.h"
 
 #if !defined(OS_CHROMEOS)
 #include "chrome/browser/system_monitor/removable_device_notifications_linux.h"
+#include "content/public/browser/browser_thread.h"
 #endif
 
 #if defined(USE_LINUX_BREAKPAD)
@@ -21,7 +23,6 @@
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/env_vars.h"
 #include "chrome/common/pref_names.h"
-#include "content/public/browser/browser_thread.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/settings/cros_settings.h"
@@ -138,7 +139,12 @@ void ChromeBrowserMainPartsLinux::PreProfileInit() {
   removable_device_notifications_linux_->Init();
 #endif
 
-  device::MediaTransferProtocolManager::Initialize();
+  scoped_refptr<base::MessageLoopProxy> loop_proxy;
+#if !defined(OS_CHROMEOS)
+  loop_proxy = content::BrowserThread::GetMessageLoopProxyForThread(
+      content::BrowserThread::FILE);
+#endif
+  device::MediaTransferProtocolManager::Initialize(loop_proxy);
 
   did_pre_profile_init_ = true;