Renames nsDocShell isBrowser* attributes to add a "Moz" prefix for clarity.
Adds nsDocShell::GetIsIsolatedMozBrowserElement, which parallels
GetIsInIsolatedMozBrowserElement, but only checks the immediate docshell.
Adds nsDocShell::SetIsInIsolatedMozBrowserElement for the frame loader and tab
child to set the isolation state.
nsDocShell methods related to mozbrowser elements (and their callers) are
updated to use GetIs(In)?IsolatedMozBrowserElement when checking isolation /
origins and GetIsMozBrowserElement when checking frame types.
MozReview-Commit-ID: 6pGD5fF47ZN
These two events are the leftovers for support copy/paste/cut/selectall
operations from old text_selection_dialog.js in Gaia. The code for
handling them can be removed since text_selection_dialog.js was removed
in bug 1221462.
The old SelectionStateChangedEvent dispatched by SelectionChanged had
this field, but it has not being ported to CaretStateChangedEvent. We
should include selected text in the event so that Gaia could have a
chance to enhance user experience.
