Add log of window redraw for orientation and activity relaunch

The log "Screen frozen for" is too rough to know how much time
the client windows spend. By adding the logs that are closer
to the entries of notify/response, it is easier to break down
the bottleneck of screen frozen time.

Also:
- Move log "Orientation start waiting" to after IWindow#resized.
  So it is clearer to know when the redraw request is sent.
- Consolidate activityRelaunched to finishRelaunching because
  the operation should belong to ActivityRecord.

Bug: 178472794
Test: Rotate device and check log "finishDrawing".
Change-Id: I07d77db1f36d653a437d9543b520522a13e12efd