26430 Roll engine e5ec3cf3ea5c..b7f6bf0192d1 (28 commits) (cla: yes)

26436 Revert “move analysis_options to package” (cla: yes, team)

26440 [fuchsia] Add BUILD.gn for flutter_localizations (a: internationalization, cla: yes, framework)

26441 Fix some doc references (cla: yes, d: api docs, f: cupertino, framework)

26444 Update compileSdkVersion in the Android app templates to Android P (cla: yes, tool, ▣ platform-android)

26449 Add asserts for @required parameters (cla: yes, framework, team)

26450 Add a manifest for profile builds that enables INTERNET permission (cla: yes, tool, ▣ platform-android)