GitLab

- Avoid v8::NewStringType::kNormal where possible
- Use v8::NewStringType::kInternalized for object properties

Bug: v8:10884
Change-Id: Ic7ec1e8dbdc1c56a72ed651da361b920c8145e7d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2398544
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#805700}