1561999 - Bypass should-load-in-process checks in window provider when Fission is enabled

Status: RESOLVED FIXED

(Core :: DOM: Core & HTML, defect, P2)

Description

[Kris Maglione [:kmag]]

When Fission is enabled, any attempt to load a URI in the wrong process type will automatically be retargeted to the correct process without any special treatment. I'd ideally still like to detect cross-process window.open() calls early and just handle them as remote loads to begin with, but the spec has very definite ideas about how window.open() should behave, and we're expected to return a window with a same-origin about:blank document while the load is pending, so doing so is relatively nontrivial.

Comment 1

[Kris Maglione [:kmag]]

Attachment: Bug 1561999: Initiate window.open() loads for cross-process URLs in the calling process under Fission. r=nika

When Fission is enabled, the load will be retargeted to the correct process
automatically, and will in the mean time give callers access to an about:blank
document as required by the spec.

Comment 2

[Kris Maglione [:kmag]]

https://hg.mozilla.org/integration/mozilla-inbound/rev/72630a7c6e6742388107a77afc26c9c191722705
Bug 1561999: Initiate window.open() loads for cross-process URLs in the calling process under Fission. r=nika

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/266160ca8e9d
Initiate window.open() loads for cross-process URLs in the calling process under Fission. r=nika

Comment 4

[Razvan Maries]

https://hg.mozilla.org/mozilla-central/rev/266160ca8e9d

Comment 5

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

Backed out 34 changesets (bug 1561150, bug 1541557, bug 1561724, bug 1561999, bug 1558298, bug 1561061, bug 1532795, bug 1560400, bug 1561122) for beta simulation failures (bug 1563905, bug 1564001):
https://hg.mozilla.org/mozilla-central/rev/7e6657f88b7694ecd841088963ff71d767e4ec22

Comment 6

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

Relanded (backout got backed out):
https://hg.mozilla.org/mozilla-central/rev/e596664275d5e3e2fdcb7fa8d1447289f99269c3