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

chrome/browser/extensions/pending_extension_manager.cc

Index: chrome/browser/extensions/pending_extension_manager.cc
diff --git a/chrome/browser/extensions/pending_extension_manager.cc b/chrome/browser/extensions/pending_extension_manager.cc
index 2958ed19edfe462b5076f7f70283039728def01b..7d0546210b9b43dd92819b87236f6896b7ccbc98 100644
--- a/chrome/browser/extensions/pending_extension_manager.cc
+++ b/chrome/browser/extensions/pending_extension_manager.cc
@@ -25,7 +25,7 @@
   return true;
 }
 
-std::string GetVersionString(const base::Version& version) {
+std::string GetVersionString(const Version& version) {
   return version.IsValid() ? version.GetString() : "invalid";
 }
 
@@ -121,7 +121,7 @@
   return AddExtensionImpl(id,
                           std::string(),
                           update_url,
-                          base::Version(),
+                          Version(),
                           should_allow_install,
                           kIsFromSync,
                           kSyncLocation,
@@ -151,7 +151,7 @@
   return AddExtensionImpl(id,
                           std::string(),
                           update_url,
-                          base::Version(),
+                          Version(),
                           should_allow_install,
                           kIsFromSync,
                           kManifestLocation,
@@ -192,7 +192,7 @@
   return AddExtensionImpl(id,
                           install_parameter,
                           update_url,
-                          base::Version(),
+                          Version(),
                           &AlwaysInstall,
                           kIsFromSync,
                           location,
@@ -201,10 +201,11 @@
                           kRemoteInstall);
 }
 
+
 bool PendingExtensionManager::AddFromExternalFile(
     const std::string& id,
     Manifest::Location install_source,
-    const base::Version& version,
+    const Version& version,
     int creation_flags,
     bool mark_acknowledged) {
   // TODO(skerner): AddFromSync() checks to see if the extension is
@@ -252,7 +253,7 @@
     const std::string& id,
     const std::string& install_parameter,
     const GURL& update_url,
-    const base::Version& version,
+    const Version& version,
     PendingExtensionInfo::ShouldAllowInstallPredicate should_allow_install,
     bool is_from_sync,
     Manifest::Location install_source,