Remove logging added for debugging the lockscreen crashes.

chrome/browser/chromeos/login/lock/webui_screen_locker.cc

Index: chrome/browser/chromeos/login/lock/webui_screen_locker.cc
diff --git a/chrome/browser/chromeos/login/lock/webui_screen_locker.cc b/chrome/browser/chromeos/login/lock/webui_screen_locker.cc
index b15895cdb94dae8e3b8278221d8e528a0f25c3da..f238ca80dec2d446dbf1026ccb48ecc0de6072aa 100644
--- a/chrome/browser/chromeos/login/lock/webui_screen_locker.cc
+++ b/chrome/browser/chromeos/login/lock/webui_screen_locker.cc
@@ -353,27 +353,6 @@ void WebUIScreenLocker::RenderProcessGone(base::TerminationStatus status) {
   }
 }
 
-void WebUIScreenLocker::PluginCrashed(const base::FilePath& plugin_path,
-                                      base::ProcessId plugin_pid) {
-  LOG(ERROR) << "Plugin crash on lock screen (plugin_path: "
-             << plugin_path.LossyDisplayName() << " plugin_pid: " << plugin_pid
-             << ")";
-}
-
-void WebUIScreenLocker::PluginHungStatusChanged(
-    int plugin_child_id,
-    const base::FilePath& plugin_path,
-    bool is_hung) {
-  LOG(ERROR) << "Plugin hung status change on lock screen;"
-             << " (plugin_child_id: " << plugin_child_id
-             << " plugin_path: " << plugin_path.LossyDisplayName()
-             << " is_hung: " << is_hung << ")";
-}
-
-void WebUIScreenLocker::WebContentsDestroyed() {
-  VLOG(2) << "Lock screen WebContents instance destroyed";
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // ash::KeyboardStateObserver overrides.