Excluded tests and test utils from code coverage by generate_coverage_command.py

Bug: chromium:844647
Change-Id: I3b99cfcbeae99794f9600f232b560c47efeebc57
Reviewed-on: https://webrtc-review.googlesource.com/99682
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24692}

tools_webrtc/coverage/generate_coverage_command.py

diff --git a/tools_webrtc/coverage/generate_coverage_command.py b/tools_webrtc/coverage/generate_coverage_command.py
index c6b38d0..a402f38 100644
--- a/tools_webrtc/coverage/generate_coverage_command.py
+++ b/tools_webrtc/coverage/generate_coverage_command.py
@@ -40,7 +40,7 @@
 def main():
   cmd = ([sys.executable, 'tools/code_coverage/coverage.py'] + TESTS +
          ['-b out/coverage', '-o out/report'] +
-         ['-i=\'.*/out/.*|.*/third_party/.*\''] +
+         ['-i=\'.*/out/.*|.*/third_party/.*|.*test.*\''] +
          ['-c \'out/coverage/%s\'' % t for t in TESTS])
 
   def WithXvfb(binary):