Fix device_event_log component build, make NonThreadSafe (Take 2)

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 50c74d2b42d42e082bd411bf22f2559cdaad3c85..ee6e25773025ed65d91c24a490e5e07160e2e225 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -109,6 +109,7 @@
 #include "chromeos/network/network_handler.h"
 #include "chromeos/system/statistics_provider.h"
 #include "chromeos/tpm/tpm_token_loader.h"
+#include "components/device_event_log/device_event_log.h"
 #include "components/metrics/metrics_service.h"
 #include "components/ownership/owner_key_util.h"
 #include "components/session_manager/core/session_manager.h"
@@ -310,6 +311,9 @@ void ChromeBrowserMainPartsChromeos::PreMainMessageLoopStart() {
 }
 
 void ChromeBrowserMainPartsChromeos::PostMainMessageLoopStart() {
+  // device_event_log must be initialized after the message loop.
+  device_event_log::Initialize(0 /* default max entries */);
+
   base::FilePath user_data_dir;
   if (!base::SysInfo::IsRunningOnChromeOS() &&
       PathService::Get(chrome::DIR_USER_DATA, &user_data_dir)) {