Convert string16 -> base::string16 in components/

components/autofill/browser/form_field_unittest.cc

Index: components/autofill/browser/form_field_unittest.cc
diff --git a/components/autofill/browser/form_field_unittest.cc b/components/autofill/browser/form_field_unittest.cc
index b8994bc6881fb5d98090583c595edac48f240be5..f6b979e93751a2015574efe355aa42dcead551ca 100644
--- a/components/autofill/browser/form_field_unittest.cc
+++ b/components/autofill/browser/form_field_unittest.cc
@@ -13,14 +13,16 @@ TEST(FormFieldTest, Match) {
   AutofillField field;
 
   // Empty strings match.
-  EXPECT_TRUE(FormField::Match(&field, string16(), FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, base::string16(),
+                               FormField::MATCH_LABEL));
 
   // Empty pattern matches non-empty string.
   field.label = ASCIIToUTF16("a");
-  EXPECT_TRUE(FormField::Match(&field, string16(), FormField::MATCH_LABEL));
+  EXPECT_TRUE(FormField::Match(&field, base::string16(),
+                               FormField::MATCH_LABEL));
 
   // Strictly empty pattern matches empty string.
-  field.label = string16();
+  field.label = base::string16();
   EXPECT_TRUE(FormField::Match(&field, ASCIIToUTF16("^$"),
               FormField::MATCH_LABEL));
 
@@ -30,7 +32,7 @@ TEST(FormFieldTest, Match) {
                FormField::MATCH_LABEL));
 
   // Non-empty pattern doesn't match empty string.
-  field.label = string16();
+  field.label = base::string16();
   EXPECT_FALSE(FormField::Match(&field, ASCIIToUTF16("a"),
                FormField::MATCH_LABEL));