perfetto: add end to end integration tests

These tests will run on a new target known as perfetto_integrationtests
with perfetto_tests renamed to perfetto_unittests.

Change-Id: I467eafd84cade516861f79295f06bb0768e46a30
diff --git a/.travis.yml b/.travis.yml
index 399457a..17c5dbf 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -146,7 +146,8 @@
   - tools/ninja -C out/dist -j8 all
   - |
     TEST_TARGETS="
-    perfetto_tests
+    perfetto_integrationtests
+    perfetto_unittests
     perfetto_benchmarks
     "
     if [[ "$CFG" != android-* ]]; then