Two small changes were done as part of the port:
- Changes TypedArrayInitializeWithBuffer from a TFS builtin to a macro.
  It was only called from ConstructByArrayBuffer and this removes the
  overhead of the TFS call.
- Introduces a GetTypedArrayElementsInfo that retrieves both the element
  size and map. Instead of generating the elements kind switch code (
  DispatchTypedArrayByElementsKind) twice, just generate once at the
  beginning of CreateTypedArray.

This reduces overall builtins size by 364 bytes (Mac x64.release)
  - Before
    1364 - TypedArrayInitializeWithBuffer
    6468 - CreateTypedArray
  - After
    7468 - CreateTypedArray

This also improves performance of TypedArray JSPerf benchmarks
(SubarrayNoSpecies, ConstructByArrayBuffer) by 5-8%.

Bug: v8:7161
Change-Id: I68eed2ea4db103f44ad9751229c29fba9bc9d24d
Reviewed-on: https://chromium-review.googlesource.com/c/1437822
Commit-Queue: Peter Wong <peter.wm.wong@gmail.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59135}