Revert "Update all users of base::Version to explicitly specify the namespace, and clean up the hea…

chrome/browser/plugins/plugin_metadata_unittest.cc

Index: chrome/browser/plugins/plugin_metadata_unittest.cc
diff --git a/chrome/browser/plugins/plugin_metadata_unittest.cc b/chrome/browser/plugins/plugin_metadata_unittest.cc
index dd5ac8a2f8c0015a8ce6955eccd7879b8b804def..03d57a7873eef5b0b0f0eff682d6df5e1356aa98 100644
--- a/chrome/browser/plugins/plugin_metadata_unittest.cc
+++ b/chrome/browser/plugins/plugin_metadata_unittest.cc
@@ -41,9 +41,9 @@ TEST(PluginMetadataTest, SecurityStatus) {
   EXPECT_EQ(kRequiresAuthorization,
             GetSecurityStatus(&plugin_metadata, "1.2.3"));
 
-  plugin_metadata.AddVersion(base::Version("9.4.1"), kRequiresAuthorization);
-  plugin_metadata.AddVersion(base::Version("10"), kOutOfDate);
-  plugin_metadata.AddVersion(base::Version("10.2.1"), kUpToDate);
+  plugin_metadata.AddVersion(Version("9.4.1"), kRequiresAuthorization);
+  plugin_metadata.AddVersion(Version("10"), kOutOfDate);
+  plugin_metadata.AddVersion(Version("10.2.1"), kUpToDate);
 
   // Invalid version.
   EXPECT_EQ(kOutOfDate, GetSecurityStatus(&plugin_metadata, "foo"));