8048 Guard against NewAPI failures (cla: yes)

8049 Add read-only persistent cache (cla: yes)

8050 Skip skp files in license check (cla: yes)

8051 Used named conditionals for platform specific dependencies and suppress Android and Windows hooks on Mac. (cla: yes)

8052 remove extra source files (cla: yes)

8053 Remove redundant thread checker in FML. (cla: yes)

8054 Correct URL for Cirrus CI build status badge (cla: yes)

8055 Adds a platfromViewId to SemanticsNode (cla: yes)

8056 Send scroll events from the macOS shell (cla: yes)

8061 Android Embedding PR 17: Clarify AccessibilityBridge. (cla: yes)