[shill] Start cleaning up some of the naming confusion

We have, so far, not been tidy wrt our objects naming themselves,
for human-readable stuff, RPC-path stuff, etc.

This starts to clean up some of that confusion.

BUG=chromium-os:17744
TEST=unit tests

Change-Id: If4d7f61ba51e527984328a0ccdf4dec461b36074
Reviewed-on: http://gerrit.chromium.org/gerrit/4311
Reviewed-by: Chris Masone <cmasone@chromium.org>
Tested-by: Chris Masone <cmasone@chromium.org>
diff --git a/manager.cc b/manager.cc
index ce7a2a4..c45900b 100644
--- a/manager.cc
+++ b/manager.cc
@@ -250,7 +250,7 @@
 }
 
 string Manager::GetActiveProfileName() {
-  return ActiveProfile()->name();
+  return ActiveProfile()->GetFriendlyName();
 }
 
 }  // namespace shill