Move component updater artifacts into component_updater namespace.

sky@ please look at the files in chrome/browser for owner approval.

Long term, the idea is to unify several updaters in Chrome, so having a specific namespace could help avoiding name conflicts.

Short term, the change reduces some naming verbosity in the implementation but makes the call site names longer, so it is a wash.

Review URL: https://codereview.chromium.org/138553004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245596 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/component_updater/test/test_installer.cc b/chrome/browser/component_updater/test/test_installer.cc
index 62ae494..400edca 100644
--- a/chrome/browser/component_updater/test/test_installer.cc
+++ b/chrome/browser/component_updater/test/test_installer.cc
@@ -8,6 +8,8 @@
 #include "base/files/file_path.h"
 #include "base/values.h"
 
+namespace component_updater {
+
 TestInstaller::TestInstaller()
     : error_(0), install_count_(0) {
 }
@@ -78,3 +80,6 @@
   *installed_file = path.Append(base::FilePath::FromUTF8Unsafe(file));
   return true;
 }
+
+}  // namespace component_updater
+