Removing unnecessary DCHECK from SafeBrowsing interstitial.

BUG=30079
TEST=None.

Review URL: http://codereview.chromium.org/1131003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@42049 0039d316-1c4b-4281-b951-d872f2087c98
void InterstitialPage::DontProceed() {
  DCHECK(action_taken_ != DONT_PROCEED_ACTION);

  Disable();
  action_taken_ = DONT_PROCEED_ACTION;

  if (new_navigation_)
    TakeActionOnResourceDispatcher(RESUME);
  else
    TakeActionOnResourceDispatcher(CANCEL);

  if (should_discard_pending_nav_entry_) {
    tab_->controller().DiscardNonCommittedEntries();
  }

  Hide();
}

void InterstitialPage::DontProceed() {
  DCHECK(action_taken_ != DONT_PROCEED_ACTION);

  Disable();
  action_taken_ = DONT_PROCEED_ACTION;

  if (new_navigation_)
    TakeActionOnResourceDispatcher(RESUME);
  else
    TakeActionOnResourceDispatcher(CANCEL);

  if (should_discard_pending_nav_entry_) {
    tab_->controller().DiscardNonCommittedEntries();
  }

  Hide();
}
