Prefix string16 with base:: in ui/.

ui/base/dragdrop/os_exchange_data_provider_aurax11_unittest.cc

Index: ui/base/dragdrop/os_exchange_data_provider_aurax11_unittest.cc
diff --git a/ui/base/dragdrop/os_exchange_data_provider_aurax11_unittest.cc b/ui/base/dragdrop/os_exchange_data_provider_aurax11_unittest.cc
index c3a944aa9e55b60d6f8ce5b6fe8535a5bac59e56..0cc8f2f0d6930d8abbb0413b54f7c1987a26ee96 100644
--- a/ui/base/dragdrop/os_exchange_data_provider_aurax11_unittest.cc
+++ b/ui/base/dragdrop/os_exchange_data_provider_aurax11_unittest.cc
@@ -32,12 +32,12 @@ TEST(OSExchangeDataProviderAuraX11Test, MozillaURL) {
   }
 
   // Check that we can get non-titled entries.
-  provider.SetURL(GURL(kGoogleURL), string16());
+  provider.SetURL(GURL(kGoogleURL), base::string16());
   {
     GURL out_gurl;
     base::string16 out_str;
     EXPECT_TRUE(provider.GetURLAndTitle(&out_gurl, &out_str));
-    EXPECT_EQ(string16(), out_str);
+    EXPECT_EQ(base::string16(), out_str);
     EXPECT_EQ(kGoogleURL, out_gurl.spec());
   }
 }