Ensure URL is updated after a cross-site navigation is pre-empted by
an "ignored" navigation.

BUG=77507
TEST=NavigationControllerTest.LoadURL_IgnorePreemptsPending

Review URL: http://codereview.chromium.org/6826015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@81307 0039d316-1c4b-4281-b951-d872f2087c98
  NavigationControllerHistoryTest()
      : url0("http://foo1"),
        url1("http://foo1"),
        url2("http://foo1"),
        profile_manager_(NULL) {
  }

  NavigationControllerHistoryTest()
      : url0("http://foo1"),
        url1("http://foo1"),
        url2("http://foo1"),
        profile_manager_(NULL) {
  }
