The --turbo-stats and --turbo-stats-wasm flags are useful but they do
not work on Chromium on Android, given we cannot print on exit of the
renderer process.

To cover all scenarios, we can encode the statistics as a string
argument in the trace format. It's also helpful to see those statistics,
as well as the code kind and function name, when clicking on a slice in
chrome://tracing or perfetto.

As a drive-by cleanup, rename ESCAPE to QUOTE in the JSON serialization
code.

Change-Id: I86f03d0e020c9543feb869620164bf1aad3a2432
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3132966Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Pierre Langlois <pierre.langlois@arm.com>
Cr-Commit-Position: refs/heads/main@{#76629}