Add tracing to net::FilterSourceStream::FilterData

This commit adds tracing events to the FilterSourceStream::FilterData
method. These events capture:
  - Remaining bytes in the input buffer
  - Whether the upstream end has been reached
  - Number of bytes consumed
  - Number of bytes output (if successful)
  - Error code (if an error occurred)

This information will be useful for debugging and performance analysis.

Bug: 391950057
Change-Id: I06cc52e2e601cbf8fcbfd5c1d58eae9a84a4d782
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6197854
Reviewed-by: Adam Rice <ricea@chromium.org>
Commit-Queue: Tsuyoshi Horo <horo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1413957}