Revert "Temporary revert of two changes which potentially caused performance regressions in Flutter."

This reverts commit 49c94d3600db7e572d97f4cab06c66c013f79b77.

Reason for revert: Relanding

Original change's description:
> Temporary revert of two changes which potentially caused performance regressions in Flutter.
> 
> Revert "[vm] Re-number class ids for internal/external typed data and typed data views"
> 
> This reverts commit a062221b763deeffedd5b80af7a3d63a226ec0d7.
> 
> Revert "[vm] Unify internal/external/view typed data into new RawTypedDataBase class"
> 
> This reverts commit 94362f1af0f21455e723d1c53bc3953c830ccb6f.
> 
> Change-Id: I7189c976aa86cdcf0a3802631bff754baf3ca2cc
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/98521
> Reviewed-by: Ben Konyi <bkonyi@google.com>

TBR=bkonyi@google.com,asiva@google.com

Change-Id: I5c5be67fcec05434283153cb2592ba41afd1f41f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/98505
Reviewed-by: Ben Konyi <bkonyi@google.com>
Commit-Queue: Ben Konyi <bkonyi@google.com>