Move scroll_jank to a full TBMv3/perfetto metric.

Add a proto to store the main results, and compute the new proto as an output
table. You can see this in action:
https://screenshot.googleplex.com/7BYQuQHhxt6sEGU

Bug: 182162821
Change-Id: If84d6d639b381ce2a6e63a6f5523cec38a76b4e4
diff --git a/Android.bp b/Android.bp
index 10d3039..e525314 100644
--- a/Android.bp
+++ b/Android.bp
@@ -3660,6 +3660,7 @@
     "protos/perfetto/metrics/chrome/all_chrome_metrics.proto",
     "protos/perfetto/metrics/chrome/frame_times.proto",
     "protos/perfetto/metrics/chrome/reported_by_page.proto",
+    "protos/perfetto/metrics/chrome/scroll_jank.proto",
     "protos/perfetto/metrics/chrome/test_chrome_metric.proto",
     "protos/perfetto/metrics/custom_options.proto",
     "protos/perfetto/metrics/metrics.proto",