Bug 1571063 - Removing comment lines, part of 8017e6d5cbb6. Relanded with the correct bug number on a CLOSED TREE DONTBUILD

--HG--
extra : source : 5a02186b16a593aac36cd6474dff7cb580716cfb
extra : histedit_source : 565bf23781e84ad7ee704e2be3f3b2c49d719f05

docshell/base/BrowsingContextFieldList.h

@@ -7,9 +7,6 @@
 // Fields are, by default, settable by any process and readable by any process.
 // Racy sets will be resolved as-if they occurred in the order the parent
 // process finds out about them.
-// By defualt, synced fields may only be set by the currently active process,
-// however a field can be marked as `MOZ_BC_FIELD_RACY` to relax this
-// restriction, and allow it to be set from any process.
 //
 // Process restrictions on racy fields may be added in `WillSet{name}`
 // validators.