[tools] Add ares6 and blazor to benchmark set

These are supported by the try bots but were missing from the set.

NOTRY=true

Change-Id: Ie12801ee953b14a7f94588efc64b8c57caa6d720
Reviewed-on: https://chromium-review.googlesource.com/c/1477052
Reviewed-by: Stephan Herhut <herhut@chromium.org>
Reviewed-by: Sergiy Belozorov <sergiyb@chromium.org>
Commit-Queue: Stephan Herhut <herhut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59693}

tools/try_perf.py

@@ -31,6 +31,8 @@ DEFAULT_BOTS = [
 
 PUBLIC_BENCHMARKS = [
   'arewefastyet',
+  'ares6',
+  'blazor',
   'compile',
   'embenchen',
   'emscripten',