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

chrome/browser/ui/app_list/search/app_search_provider_unittest.cc

Index: chrome/browser/ui/app_list/search/app_search_provider_unittest.cc
diff --git a/chrome/browser/ui/app_list/search/app_search_provider_unittest.cc b/chrome/browser/ui/app_list/search/app_search_provider_unittest.cc
index f25b09b7bc420ddc5d38565a19e6c5deea5a7ea3..5aa684279cecdecc69f1733390ac153549b65287 100644
--- a/chrome/browser/ui/app_list/search/app_search_provider_unittest.cc
+++ b/chrome/browser/ui/app_list/search/app_search_provider_unittest.cc
@@ -50,7 +50,7 @@ class AppSearchProviderTest : public ExtensionServiceTestBase {
   }
 
   std::string RunQuery(const std::string& query) {
-    app_search_->Start(UTF8ToUTF16(query));
+    app_search_->Start(base::UTF8ToUTF16(query));
     app_search_->Stop();
 
     std::string result_str;
@@ -59,7 +59,7 @@ class AppSearchProviderTest : public ExtensionServiceTestBase {
       if (!result_str.empty())
         result_str += ',';
 
-      result_str += UTF16ToUTF8(results[i]->title());
+      result_str += base::UTF16ToUTF8(results[i]->title());
     }
     return result_str;
   }