ui: Use stl utilities from the base namespace

ui/views/layout/grid_layout.cc

Index: ui/views/layout/grid_layout.cc
diff --git a/ui/views/layout/grid_layout.cc b/ui/views/layout/grid_layout.cc
index 438d376415b8d249e9bbd7a89b19bd4fadbb958e..77a567ca5148e0735b69efebd221138fc2302472 100644
--- a/ui/views/layout/grid_layout.cc
+++ b/ui/views/layout/grid_layout.cc
@@ -374,7 +374,7 @@ ColumnSet::ColumnSet(int id) : id_(id) {
 }
 
 ColumnSet::~ColumnSet() {
-  STLDeleteElements(&columns_);
+  base::STLDeleteElements(&columns_);
 }
 
 void ColumnSet::AddPaddingColumn(float resize_percent, int width) {
@@ -662,9 +662,9 @@ GridLayout::GridLayout(View* host)
 }
 
 GridLayout::~GridLayout() {
-  STLDeleteElements(&column_sets_);
-  STLDeleteElements(&view_states_);
-  STLDeleteElements(&rows_);
+  base::STLDeleteElements(&column_sets_);
+  base::STLDeleteElements(&view_states_);
+  base::STLDeleteElements(&rows_);
 }
 
 // static