Remove wchar/wstring version of StringPrintf.

content/browser/geolocation/wifi_data_provider_common_unittest.cc

Index: content/browser/geolocation/wifi_data_provider_common_unittest.cc
diff --git a/content/browser/geolocation/wifi_data_provider_common_unittest.cc b/content/browser/geolocation/wifi_data_provider_common_unittest.cc
index 664421d899ce44883a5ede711276c41ae4380a55..538fbf1b4b3a7a5769a999b056d287408f9d0bfe 100644
--- a/content/browser/geolocation/wifi_data_provider_common_unittest.cc
+++ b/content/browser/geolocation/wifi_data_provider_common_unittest.cc
@@ -134,6 +134,13 @@ class GeolocationWifiDataProviderCommonTest : public testing::Test {
   MockPollingPolicy* polling_policy_;
 };
 
+TEST_F(GeolocationWifiDataProviderCommonTest, MacAddressString) {
+  uint8 mac[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+  string16 actual = MacAddressAsString16(mac);
+  string16 expected = ASCIIToUTF16("ff-ff-ff-ff-ff-ff");
+  EXPECT_EQ(expected, actual);
+}
+
 TEST_F(GeolocationWifiDataProviderCommonTest, CreateDestroy) {
   // Test fixture members were SetUp correctly.
   EXPECT_EQ(&main_message_loop_, MessageLoop::current());