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
void ResourceDispatcherHostImpl::ContinueSSLRequest(
    const GlobalRequestID& id) {
  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  net::URLRequest* request = GetURLRequest(id);
  if (!request)
    return;
  DVLOG(1) << "ContinueSSLRequest() url: " << request->url().spec();
  request->ContinueDespiteLastError();
}

void ResourceDispatcherHostImpl::ContinueSSLRequest(
    const GlobalRequestID& id) {
  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  net::URLRequest* request = GetURLRequest(id);
  if (!request)
    return;
  DVLOG(1) << "ContinueSSLRequest() url: " << request->url().spec();
  request->ContinueDespiteLastError();
}
