Migrate inspector connection to the new API.
Merge pull request #670 from dgozman/devtoolshost

Migrate inspector connection to the new API.
Fix #671 (Importer skipping initial systrace entries)
Merge pull request #672 from petrcermak/systrace_fix

Fix #671 (Importer skipping initial systrace entries)
Add a perf test for CounterTrack class