Prepare for moving V8 compile events to disabled-by-default v8.compile

category.

This adds v8.compile category to benchmarks that track executionMetric.

BUG=625865
CQ_EXTRA_TRYBOTS=tryserver.chromium.perf:android_s5_perf_cq;tryserver.chromium.perf:mac_retina_perf_cq

Review-Url: https://codereview.chromium.org/2121263002
Cr-Commit-Position: refs/heads/master@{#403915}

tools/perf/benchmarks/v8.py

@@ -24,6 +24,7 @@ def CreateV8TimelineBasedMeasurementOptions():
   category_filter = chrome_trace_category_filter.ChromeTraceCategoryFilter()
   category_filter.AddIncludedCategory('v8')
   category_filter.AddIncludedCategory('blink.console')
+  category_filter.AddDisabledByDefault('disabled-by-default-v8.compile')
   options = timeline_based_measurement.Options(category_filter)
   options.SetTimelineBasedMetric('executionMetric')
   return options