19339 Fix broken mac/fuchsia compiles (affects: tests, cla: yes, platform-android, platform-fuchsia, platform-ios, platform-linux, platform-macos, platform-windows)

19399 fuchsia:  Fix profile build (cla: yes, platform-fuchsia)

19500 fuchsia: Remove dead flutter_frontend_server code (cla: yes, code health, platform-fuchsia)

perf: memory - 5 pull request(s)

18164 Fix iOS platform view not deallocated (cla: yes, perf: memory, severe: performance)

18516 [profiling] Memory Profiling support for iOS (cla: yes, perf: memory, severe: performance)

18827 Record path memory usage in SkPictures (cla: yes, perf: memory)