Update some uses of UTF conversions in chrome/browser to use the base:: namespace.

chrome/browser/autocomplete/extension_app_provider_unittest.cc

Index: chrome/browser/autocomplete/extension_app_provider_unittest.cc
diff --git a/chrome/browser/autocomplete/extension_app_provider_unittest.cc b/chrome/browser/autocomplete/extension_app_provider_unittest.cc
index 24e8bd737ee55ef66c6748533c6f76cdcdd47364..f40ef75cfe0d2cf9cc6a1dc89cc8a9529b92c829 100644
--- a/chrome/browser/autocomplete/extension_app_provider_unittest.cc
+++ b/chrome/browser/autocomplete/extension_app_provider_unittest.cc
@@ -14,6 +14,8 @@
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using base::ASCIIToUTF16;
+
 class ExtensionAppProviderTest : public testing::Test {
  protected:
   struct test_data {
@@ -75,7 +77,7 @@ void ExtensionAppProviderTest::SetUp() {
 
     // Populate the InMemoryDatabase.
     history::URLRow info(GURL(kExtensionApps[i].launch_url));
-    info.set_title(UTF8ToUTF16(kExtensionApps[i].title));
+    info.set_title(base::UTF8ToUTF16(kExtensionApps[i].title));
     info.set_typed_count(kExtensionApps[i].typed_count);
     url_db->AddURL(info);
   }