changegroup: progress for added files is not measured in "chunks"

The "prog" class cg1unpacker.apply() has the unit set to
"chunks". This is not correct for files, where the file itself is the
unit. The unit is not usually printed, which is probably why this has
not been fixed yet. It can be show with e.g. "--config
progress.format='topic number unit'".

mercurial/changegroup.py

@@ -394,9 +394,8 b' class cg1unpacker(object):'
 
                 # process the files
                 repo.ui.status(_("adding file changes\n"))
-                pr = prog(_('files'), efiles)
                 newrevs, newfiles = _addchangegroupfiles(
-                    repo, self, revmap, trp, pr, needfiles)
+                    repo, self, revmap, trp, efiles, needfiles)
                 revisions += newrevs
                 files += newfiles
 
@@ -1068,16 +1067,18 b' def changegroup(repo, basenodes, source)'
     # to avoid a race we use changegroupsubset() (issue1320)
     return changegroupsubset(repo, basenodes, repo.heads(), source)
 
-def _addchangegroupfiles(repo, source, revmap, trp, pr, needfiles):
+def _addchangegroupfiles(repo, source, revmap, trp, expectedfiles, needfiles):
     revisions = 0
     files = 0
     while True:
         chunkdata = source.filelogheader()
         if not chunkdata:
             break
+        files += 1
         f = chunkdata["filename"]
         repo.ui.debug("adding %s revisions\n" % f)
-        pr()
+        repo.ui.progress(_('files'), files, unit=_('files'),
+                         total=expectedfiles)
         fl = repo.file(f)
         o = len(fl)
         try:
@@ -1086,7 +1087,6 b' def _addchangegroupfiles(repo, source, r'
         except error.CensoredBaseError as e:
             raise error.Abort(_("received delta base is censored: %s") % e)
         revisions += len(fl) - o
-        files += 1
         if f in needfiles:
             needs = needfiles[f]
             for new in xrange(o, len(fl)):