Incremental GCInfo descriptor table expansion.
The Oilpan GC infrastructure keeps a GCInfo descriptor per garbage
allocated class, with heap object headers referring to their descriptor
by way of a table index. 15 bits are currently set aside for these
indices.
Incrementally expand the underlying table rather than allocate it all
upfront.
R=haraken
BUG=446582
Review URL: https://codereview.chromium.org/820693006
git-svn-id: svn://svn.chromium.org/blink/trunk@187992 bbb929c8-8fbe-4397-9dbb-9b2b20218538
4 files changed
