This is a reland of e2d44ede

Original change's description:
> [parser] Inline byte scope data into PreparseData object
> 
> Each PreparseData object had at least one pointer to a PodArray for its
> serialized scope data. These objects usually have only tens of bytes of
> payload. By inlining the byte data we save 3 words per PreparseData object.
> This optimization saves 140KB of data on cnn.com.
> 
> 
> - Store data_length and inner_length as int32 saving a words on 64bit
> - Inline store byte data into PreparseData
> - OnHeapConsumedPreparseData directly uses the PreparseData object
> - get_inner, set_inner no longer allow Null sentinels
> 
> Change-Id: I1f62154d05ea2f98a6574efa738b32a8a84319d5
> Reviewed-on: https://chromium-review.googlesource.com/c/1406673
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Camillo Bruni <cbruni@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#58751}

Change-Id: I1f0a22c641d0d67f435b01c82daf8da7f144bff4
Reviewed-on: https://chromium-review.googlesource.com/c/1407066Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58785}