Move component updater artifacts into component_updater namespace.

chrome/browser/component_updater/test/update_checker_unittest.cc

Index: chrome/browser/component_updater/test/update_checker_unittest.cc
diff --git a/chrome/browser/component_updater/test/update_checker_unittest.cc b/chrome/browser/component_updater/test/update_checker_unittest.cc
index 9ec39e24913da1e95bcd0a7db97a39449646dce7..c031488e900b9f9be4728ee1fac55bf56db6aa5a 100644
--- a/chrome/browser/component_updater/test/update_checker_unittest.cc
+++ b/chrome/browser/component_updater/test/update_checker_unittest.cc
@@ -25,12 +25,16 @@ using content::BrowserThread;
 
 namespace component_updater {
 
+namespace {
+
 base::FilePath test_file(const char* file) {
   base::FilePath path;
   PathService::Get(chrome::DIR_TEST_DATA, &path);
   return path.AppendASCII("components").AppendASCII(file);
 }
 
+}  // namespace
+
 class UpdateCheckerTest : public testing::Test {
  public:
   UpdateCheckerTest();