[Webkit-unassigned] [Bug 194189] New: Validate navigation policy decisions to avoid crashes in continueLoadAfterNavigationPolicy

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=194189

            Bug ID: 194189
           Summary: Validate navigation policy decisions to avoid crashes
                    in continueLoadAfterNavigationPolicy
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Page Loading
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rniwa at webkit.org
                CC: beidson at apple.com

We're hitting crashes in FrameLoader::continueLoadAfterNavigationPolicy
where isBackForwardLoadType would return true yet history().provisionalItem() is null.

We think this is because we're mixing up one policy decision requests / responses for different navigations.

Add identifiers for each policy decision in WebCore as done in WebKit2.

<rdar://problem/22872341>

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