зеркало из https://github.com/mozilla/gecko-dev.git
f665b313f3
This patch makes several changes to the kinds of URLs where we can cancel
content JS when navigating between them:
1) When navigating directly to a URL (e.g. by typing something into the
location bar and hitting Enter), we allow canceling content JS if the URLs
differ in any way *except* their ref ("#"). To help with this, we also
attempt to fix up the URL (e.g. by prepending "http://" to it).
2) When navigating through history, we allow canceling content JS if the
`prePath` part of the URLs differ. Most notably, this allows canceling
content JS when one of the URLs is an `about:` page (e.g. when hitting the
Home button).
3) We explicitly disallow cancelling content JS if the currently-running JS
is trusted or if the page being navigated away from is anything but
http(s): or file:.
4) We also disallow cancelling content JS for windows that are still being
created (e.g. when creating a new tab or window via `window.open`). For
more background on this, see the comments about `mCreatingWindow` in
dom/ipc/BrowserParent.h.
5) We ensure that, when attempting to cancel JS, the tab ID of the
currently-running script matches the original tab that requested the
cancellation. This avoids a race condition in which a particular JSContext
has already moved on to executing another tab's JS by the time we hit our
interrupt callback.
Differential Revision: https://phabricator.services.mozilla.com/D31875
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extra : moz-landing-system : lando
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