[dawn][headers] Use PassTimestampWrites.

- Removes old usages of RenderPassTimestampWrites and
  ComputePassTimestampWrites in favor of the renamed
  PassTimestampWrites.
- Note that the change is not upstreamed to Emscripten,
  hence the additional ifdef is necessary.

Bug: 378514255
Change-Id: I5cb928eb02ba4145656cf13bc9e8fe9356348c59
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/944196
Reviewed-by: Nicolette Prevost <nicolettep@google.com>
Auto-Submit: Loko Kung <lokokung@google.com>
Commit-Queue: Nicolette Prevost <nicolettep@google.com>
1 file changed