Convert string16 -> base::string16 in components/

components/autofill/browser/autofill_field.h

Index: components/autofill/browser/autofill_field.h
diff --git a/components/autofill/browser/autofill_field.h b/components/autofill/browser/autofill_field.h
index aa43091099fc7cb3201f5882f0f662145548302a..e9619195ce57811b510ca8c71ae704e82447b1f5 100644
--- a/components/autofill/browser/autofill_field.h
+++ b/components/autofill/browser/autofill_field.h
@@ -21,10 +21,10 @@ class AutofillField : public FormFieldData {
   };
 
   AutofillField();
-  AutofillField(const FormFieldData& field, const string16& unique_name);
+  AutofillField(const FormFieldData& field, const base::string16& unique_name);
   virtual ~AutofillField();
 
-  const string16& unique_name() const { return unique_name_; }
+  const base::string16& unique_name() const { return unique_name_; }
 
   const std::string& section() const { return section_; }
   AutofillFieldType heuristic_type() const { return heuristic_type_; }
@@ -61,7 +61,7 @@ class AutofillField : public FormFieldData {
 
  private:
   // The unique name of this field, generated by Autofill.
-  string16 unique_name_;
+  base::string16 unique_name_;
 
   // The unique identifier for the section (e.g. billing vs. shipping address)
   // that this field belongs to.