20922 Increase thread priority before engine init (cla: yes, perf: speed, platform-android, severe: performance)

perf: speed - 3 pull request(s)

20003 Reland: Avoid a copy in EncodeImage (cla: yes, perf: speed, severe: performance)

20142 Create root isolate asynchronously (cla: yes, perf: speed, severe: performance)

20922 Increase thread priority before engine init (cla: yes, perf: speed, platform-android, severe: performance)

affects: text input - 2 pull request(s)

20520 [web] Prepare for read-only input fields (affects: text input, cla: yes, platform-web, waiting for tree to go green)