[chrome] Narrow the scope of some of some Chrome browsertest data deps.

Reduces the size of Chrome browser_tests by trimming the runtime data
list.
* Only include media test files which are actually used by test code.
* Only including PPAPI resources when PPAPI is available.

Bug: 1297758
Bug: 1293574
Change-Id: I7f86d618999c9156a00411155651fd14ed1c672b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3488292


Reviewed-by: Greg Thompson <grt@chromium.org>
Commit-Queue: Kevin Marshall <kmarshall@chromium.org>
Cr-Commit-Position: refs/heads/main@{#975727}