Merged r11815 into trunk branch.

Fix assertion for map code cache of shared maps.

R=danno@chromium.org
TEST=mjsunit/compare-known-objects-slow

Review URL: https://chromiumcodereview.appspot.com/10534159

git-svn-id: http://v8.googlecode.com/svn/trunk@11823 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
3 files changed