Inherits SupportsWeakPtr<T> instead of having WeakPtrFactory<T>

This change refines r137676.

BUG=122654
TEST=browser_test


Review URL: https://chromiumcodereview.appspot.com/10332233

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@139771 0039d316-1c4b-4281-b951-d872f2087c98
bool SocketStreamDispatcherHost::CanGetCookies(net::SocketStream* socket,
                                               const GURL& url) {
  return content::GetContentClient()->browser()->AllowGetCookie(
      url, url, net::CookieList(), resource_context_, 0, MSG_ROUTING_NONE);
}

bool SocketStreamDispatcherHost::CanGetCookies(net::SocketStream* socket,
                                               const GURL& url) {
  return content::GetContentClient()->browser()->AllowGetCookie(
      url, url, net::CookieList(), resource_context_, 0, MSG_ROUTING_NONE);
}
