Make HCheckPrototypeMaps compatible with parallel recompilation.
HCheckPrototypeMaps currently records the prototype and the holder of the
prototype chain (both ends of the chain) and assumes that the chain elements
and their maps did not change in during the entirety of Crankshaft. The actual
traversal of the prototype chain happens in Lithium at code generation.
With parallel compilation, this assumption is not longer correct.
R=mstarzinger@chromium.org
BUG=
Review URL: https://chromiumcodereview.appspot.com/
11864013
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13454
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00