Remove disabling of prerender for managed users.

This is a revert of issue https://chromiumcodereview.appspot.com/14471033/

BUG=234231

Review URL: https://chromiumcodereview.appspot.com/15891005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@202566 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/prerender/prerender_manager.cc

@@ -59,12 +59,6 @@
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 
-#if defined(ENABLE_MANAGED_USERS)
-#include "chrome/browser/managed_mode/managed_mode_url_filter.h"
-#include "chrome/browser/managed_mode/managed_user_service.h"
-#include "chrome/browser/managed_mode/managed_user_service_factory.h"
-#endif
-
 using content::BrowserThread;
 using content::RenderViewHost;
 using content::SessionStorageNamespace;
@@ -1064,18 +1058,6 @@ PrerenderHandle* PrerenderManager::AddPrerender(
   if (!IsEnabled())
     return NULL;
 
-#if defined(ENABLE_MANAGED_USERS)
-  // Check if the url would be blocked. If yes, don't add the prerender.
-  ManagedUserService* service =
-      ManagedUserServiceFactory::GetForProfile(profile_);
-  if (service->ProfileIsManaged()) {
-    ManagedModeURLFilter* filter = service->GetURLFilterForUIThread();
-    if (filter->GetFilteringBehaviorForURL(url_arg) ==
-        ManagedModeURLFilter::BLOCK)
-      return NULL;
-  }
-#endif
-
   if ((origin == ORIGIN_LINK_REL_PRERENDER_CROSSDOMAIN ||
        origin == ORIGIN_LINK_REL_PRERENDER_SAMEDOMAIN) &&
       IsGoogleSearchResultURL(referrer.url)) {