content: Use stl utilities from the base namespace

content/browser/time_zone_monitor_linux.cc

Index: content/browser/time_zone_monitor_linux.cc
diff --git a/content/browser/time_zone_monitor_linux.cc b/content/browser/time_zone_monitor_linux.cc
index 952e2e8812d032d8a287b3eb0bbd13160ca9d8b6..88a59188eb030db83df681b545d5ec029914192c 100644
--- a/content/browser/time_zone_monitor_linux.cc
+++ b/content/browser/time_zone_monitor_linux.cc
@@ -74,7 +74,7 @@ class TimeZoneMonitorLinuxImpl
 
   ~TimeZoneMonitorLinuxImpl() {
     DCHECK(!owner_);
-    STLDeleteElements(&file_path_watchers_);
+    base::STLDeleteElements(&file_path_watchers_);
   }
 
   void StartWatchingOnFileThread() {
@@ -104,7 +104,7 @@ class TimeZoneMonitorLinuxImpl
 
   void StopWatchingOnFileThread() {
     DCHECK_CURRENTLY_ON(BrowserThread::FILE);
-    STLDeleteElements(&file_path_watchers_);
+    base::STLDeleteElements(&file_path_watchers_);
   }
 
   void OnTimeZoneFileChanged(const base::FilePath& path, bool error) {