Toolkit's Classic theme already supports this.
Created attachment 360973 [details] [diff] [review] Proposed patch Once you've opened the history sidebar panel you should be able to tab to its View button (or indeed the sidebar's own Tabs button) and press F4 to open it.
Assignee: nobody → neil
Status: NEW → ASSIGNED
Attachment #360973 - Flags: review?(iann_bugzilla)
Pushed changeset 5baaa7e51bf7 to comm-central.
Status: ASSIGNED → RESOLVED
Last Resolved: 10 years ago
Resolution: --- → FIXED
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