We need to build browser_tests during 'compile' step, so enabling in gypi. Disabled from running in coverage_posix.py. 

Review URL: https://chromiumcodereview.appspot.com/11377077

Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 157c0b6e86494272a8012d7b21a9347c07087528
1 file changed