[Webkit-unassigned] [Bug 183386] New: LayoutTests/http/tests/navigation/page-cache-iframe-provisional-load.html fails with async policy delegate

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=183386

            Bug ID: 183386
           Summary: LayoutTests/http/tests/navigation/page-cache-iframe-pr
                    ovisional-load.html fails with async policy delegate
           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: danyao at chromium.org
                CC: beidson at apple.com

This test starts a slow load in an iframe and tries to navigate away from the main frame. It expects that the pending iframe navigation will prevent the main frame document from being added to the PageCache.

With async decide policy, PageCache::addIfCacheable() may be called (and it is in this test) on the main frame navigation while the subframe is still waiting for policy decision. The subframe loader's state has not yet been updated from FrameStateCompleted to FrameStateProvisional. This causes PageCache to incorrect consider the page as cacheable.

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