Prefix string16 with base:: in ui/.

ui/views/controls/prefix_selector_unittest.cc

Index: ui/views/controls/prefix_selector_unittest.cc
diff --git a/ui/views/controls/prefix_selector_unittest.cc b/ui/views/controls/prefix_selector_unittest.cc
index c39e6cc652afb0bf203cfef02dc5e5f8cdd8a83b..14356dfa5606b49cc5a32796e7e27f9547087e79 100644
--- a/ui/views/controls/prefix_selector_unittest.cc
+++ b/ui/views/controls/prefix_selector_unittest.cc
@@ -36,12 +36,12 @@ class TestPrefixDelegate : public PrefixDelegate {
     selected_row_ = row;
   }
 
-  virtual string16 GetTextForRow(int row) OVERRIDE {
+  virtual base::string16 GetTextForRow(int row) OVERRIDE {
     return rows_[row];
   }
 
  private:
-  std::vector<string16> rows_;
+  std::vector<base::string16> rows_;
   int selected_row_;
 
   DISALLOW_COPY_AND_ASSIGN(TestPrefixDelegate);