view CONTRIBUTING @ 39961:ad9ca365738b

narrow: factor out logic to create cg while widening into separate fn

This patch takes out the logic which generates a changegroup for widening a
narrow clone when ellipses are disabled. This is done because future patches
will introduce a narrow_widen() wireprotocol command which will send a
bundle2 with changegroup and will use this function.

The new function for now returns just the changegroup for compatibility with
existing code, but in future patches, when we establish a wireprotocol command
and call this function from there, this will return the required bundle2.

Differential Revision: https://phab.mercurial-scm.org/D4786

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