Revert of base: Remove using:: declaration from version.h header.

chrome/browser/enumerate_modules_model_win.cc

Index: chrome/browser/enumerate_modules_model_win.cc
diff --git a/chrome/browser/enumerate_modules_model_win.cc b/chrome/browser/enumerate_modules_model_win.cc
index ca6666f598759ff2aa01a053b675421d30664d39..a940c2eeb1bfcff301caf188e679ac20aad9c9d3 100644
--- a/chrome/browser/enumerate_modules_model_win.cc
+++ b/chrome/browser/enumerate_modules_model_win.cc
@@ -412,9 +412,9 @@
           location_hash == blacklisted.location)) {
     // We have a name match against the blacklist (and possibly location match
     // also), so check version.
-    base::Version module_version(base::UTF16ToASCII(module.version));
-    base::Version version_min(blacklisted.version_from);
-    base::Version version_max(blacklisted.version_to);
+    Version module_version(base::UTF16ToASCII(module.version));
+    Version version_min(blacklisted.version_from);
+    Version version_max(blacklisted.version_to);
     bool version_ok = !version_min.IsValid() && !version_max.IsValid();
     if (!version_ok) {
       bool too_low = version_min.IsValid() &&