views: Use STLDeleteElements() function in ClearEditHistory().

ui/views/controls/textfield/textfield_views_model.cc

Index: ui/views/controls/textfield/textfield_views_model.cc
diff --git a/ui/views/controls/textfield/textfield_views_model.cc b/ui/views/controls/textfield/textfield_views_model.cc
index 069013b1a2193f64582eb5351821205bb132f251..4adba05ea34a1feefd06809839fd7f55af41a166 100644
--- a/ui/views/controls/textfield/textfield_views_model.cc
+++ b/ui/views/controls/textfield/textfield_views_model.cc
@@ -666,9 +666,7 @@ void TextfieldViewsModel::ReplaceTextInternal(const string16& text,
 }
 
 void TextfieldViewsModel::ClearEditHistory() {
-  STLDeleteContainerPointers(edit_history_.begin(),
-                             edit_history_.end());
-  edit_history_.clear();
+  STLDeleteElements(&edit_history_);
   current_edit_ = edit_history_.end();
 }