Add a hack to handle GetPage() being null in LocalFrame::IsProvisional()
Normally, this shouldn't happen, but there is a bug that causes the FrameLifecycle to be rewound from kDetached to kDetaching when a frame is detached twice (!!). Simply return false in this case, since any work gated on IsProvisional() should have already happened, so skipping it should be "safe". Bug: 838348, 1154141 Change-Id: Ic7a5e4014e3eb42b1f8881472b39743e718b8ff3 Fixed: 1148955 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2575725 Commit-Queue: Daniel Cheng <dcheng@chromium.org> Reviewed-by:Nate Chapin <japhet@chromium.org> Cr-Commit-Position: refs/heads/master@{#833988}
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