Exclude platform_unittest.cc from chromium builds am: eddc7d0df5
Exclude platform_unittest.cc from chromium builds am: eddc7d0df5

Original change: https://android-review.googlesource.com/c/platform/external/perfetto/+/1545527

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I44b6ada0b3e25c91e7fac2eea3757433853abc0b

google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto