In Android M and above, there is a new method of collecting fps
statistics, using gfxinfo rather than SurfaceFlinger, but the
SF method is still available however.
This parameter lets the user decide whether to always use SF,
or to allow the instrument to pick the best method based on
Android version it detects.
Add a new parameter to fps instrument to specify the time period between
calls to ``dumpsys SurfaceFlinger --latency`` in seconds when collecting
frame data. A lower value improves the granularity of timings when
recording actions for UX Performance metrics.
Processing logic for frame statistics can be moved out of fps instrument
to a new utility file. This will allow result processors to use the same
logic to produce frame statistics on a subsection of the data
produced by the fps instrument.
Added -p option to the list command. This alows filtering results by
supported platforms, e.g.
wa list workloads -p linux
Also adding missing supported_platforms attribute to various extensions.
If an extension does not have this attribute, the assumption is that it
is supported by all available platforms.
