Neutering API for v8::ArrayBuffer

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/16562005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15006 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add missing AllowHandleDereference to LAllocator::BuildLiveRanges.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/16509004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15007 ce2b1a6d-e550-0410-aec6-3dcde31c8c00