
Speed improvements for CallGraph.
- Avoid MultiMaps.
- Combine Function and Callsite creation into one traversal.
- Speeds up Maps Callgraph creation by 30%, Pinto by 50%.
- Still too slow.

R=acleung
DELTA=229  (98 added, 102 deleted, 29 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=116006


git-svn-id: 818616af560c21f974e3119d89e3310384da871a@360 b0f006be-c8cd-11de-a2e8-8d36a3108c74

nuxleus/closure-compiler,nuxleus/closure-compiler