Revert 82018 - Revert 81994 - Fixes race condition in displaying error pages. In particular it waspossible for an error page load to cancel a navigation.BUG=79515TEST=noneR=darin@chromium.orgReview URL: http://codereview.chromium.org/6865031TBR=sky@chromium.orgReview URL: http://codereview.chromium.org/6881026 TBR=sky@chromium.org Review URL: http://codereview.chromium.org/6878034
Revert 82018 - Revert 81994 - Fixes race condition in displaying error pages. In particular it waspossible for an error page load to cancel a navigation.BUG=79515TEST=noneR=darin@chromium.orgReview URL: http://codereview.chromium.org/6865031TBR=sky@chromium.orgReview URL: http://codereview.chromium.org/6881026
TBR=sky@chromium.org
Review URL: http://codereview.chromium.org/6878034

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@82031 0039d316-1c4b-4281-b951-d872f2087c98

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