Prior to this change, SpecialPowers used the extension id to identiy
extension instances in inter-process messaging. This required that
an id be allocated from the content process side when loadExtension()
was called, but that made it impossible to test code that exercises the
code path in the AddonManager that allocates ids for extensions that do
not include an id in the manifest (it also made the loadExtension() api
clunky).
With this change, SpecialPowers allocates an internal identifier for
messaging, but this identifier is separate from extension ids.
Confusingly, we still store the actual extension id in an id property
on the object returned by loadExtension(), but there are enough tests
that reference this that it would be unnecessarily disruptive to get
rid of it so it stays for now...
MozReview-Commit-ID: G6xk1mBJJL8
Most of the test helper code is derived from the SpecialPowers/ExtensionTestUtils
code that does the same. Eventually, the two implementations should probably
be unified, but I don't think it's worth the trouble for now.
MozReview-Commit-ID: 7Yy9jWkGsMM
Most of the test helper code is derived from the SpecialPowers/ExtensionTestUtils
code that does the same. Eventually, the two implementations should probably
be unified, but I don't think it's worth the trouble for now.
MozReview-Commit-ID: 7Yy9jWkGsMM
