Drive-by-fix:
- fix legend formatting
- Fix color from type retrieval
- Partially fix file location parsing in Processor

Bug: v8:10644
Change-Id: I8d9ecc4923c9772de66da74e9440b293fcecc5e2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2465831
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70608}