Chrome Version: 66.0.3357.0
OS: Windows 10

Repro URL: https://www.bayden.com/test/frames/malformedpdf.html

This is a reduction from a real-world scenario on Windows Live Mail, where reloading the site loses a lot more of the user's state.

What steps will reproduce the problem?
(1) Load a (presumably malformed) PDF file in a subframe
(2) See an alert that the load failed (IDS_PDF_PAGE_LOAD_FAILED)
(3) Click the Reload button

OBSERVE: Entire outer page reloads

EXPECT: Only PDF reloads


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"https://cs.chromium.org/chromium/src/chrome/browser/resources/pdf/pdf.js?rcl=e95311238ceb7ef9db929db6b8c2c2ae686a04da&l=140
kinda looks that way ... the extension seems to be using the tab interface to reload the tab."