Remove unnecessary intermediate profile while getting blacklist service from browser context

Change-Id: Icf0e005780283a07dd76f52972811dce4ebfaed8
Reviewed-on: https://chromium-review.googlesource.com/c/1448184Reviewed-by: Michael Giuffrida <michaelpg@chromium.org>
Commit-Queue: Oleg Davydov <burunduk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#628304}

chrome/browser/chrome_content_browser_client.cc

@@ -1005,10 +1005,9 @@ void LaunchURL(
   }
 
   bool is_whitelisted = false;
-  Profile* profile =
-      Profile::FromBrowserContext(web_contents->GetBrowserContext());
   PolicyBlacklistService* service =
-      PolicyBlacklistFactory::GetForBrowserContext(profile);
+      PolicyBlacklistFactory::GetForBrowserContext(
+          web_contents->GetBrowserContext());
   if (service) {
     const policy::URLBlacklist::URLBlacklistState url_state =
         service->GetURLBlacklistState(url);