Get rid of content::NavigationController in cc file and use "using" instead.

BUG=98716
TBR=joi
Review URL: http://codereview.chromium.org/8983012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@116328 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/webstore_installer.cc b/chrome/browser/extensions/webstore_installer.cc
index c475c73..7b63d89 100644
--- a/chrome/browser/extensions/webstore_installer.cc
+++ b/chrome/browser/extensions/webstore_installer.cc
@@ -34,6 +34,7 @@
 
 using content::BrowserThread;
 using content::DownloadFile;
+using content::NavigationController;
 
 namespace {
 
@@ -104,7 +105,7 @@
 
 WebstoreInstaller::WebstoreInstaller(Profile* profile,
                                      Delegate* delegate,
-                                     content::NavigationController* controller,
+                                     NavigationController* controller,
                                      const std::string& id,
                                      int flags)
     : profile_(profile),