[Invalidation Tracking] Add trace events for compositor based invalidations

This patch add a new trace event InspectorLayerInvalidationTrackingEvent for invalidation reason tracking. The event tracks when compositor invalidates the whole RenderLayer including its descendents, along with its reason.

BUG=410701

Review URL: https://codereview.chromium.org/565793003

git-svn-id: svn://svn.chromium.org/blink/trunk@181933 bbb929c8-8fbe-4397-9dbb-9b2b20218538