GitLab

Post marking processing assumed that the backing store for weak
HashTable's remains unchanged during marking which is not correct in the
presence of incremental marking.

Since post marking was just marking the header of the backing store this
can be merged into the weak processing steps.

This CL
- Remove Heap::post_marking_worklist_ completely, avoid any memory
  consumption it might require.
- Merges WeakProcessing and PostMarkingProcessing as the post marking
  steps were only used for weak HashTables.

Bug: chromium:828537, chromium:757440
Change-Id: I0d0b7552786659becf039419bff3701e7bb72aee
Reviewed-on: https://chromium-review.googlesource.com/999485Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548854}