This is a reland of 344c584ec4
First attempt failed due to lack of implementation of the new
API from SDK in Flutter/engine that this change introduces.
Fixed by creating dummy implementation in flutter/engine:
https://github.com/flutter/engine/pull/16309
Original change's description:
> Implementation of evaluation to JS in frontend server
>
> - made ProgramCompiler somewhat incremental by letting the user
> set the current library and class
> - fixed a bug in procedure_builder where extension method wrappers
> did not have correct fileEndOffset set, which prevented finding
> dart scope at a line when extension methods are used
> - added new compileExpressionToJs API to frontend server and
> frontend compiler interface
> - added ExpressionCompier class that combines IncrementalCompiler
> and ProgramCompiler to compile expression at given dart location
> to JavaScript
> - in JavascriptBundle, set the module name for library tracking in
> JavaScript and saved program compilers to a table for incremental
> reuse in expression compiler
> - Exposed generator from IncrementalCompiler for use in
> ExpressionCompiler
> - added tests for expression compiler
> - added test for compileExpressionToJs API in frontend server tests
>
>
> Change-Id: Ic5e7829e07030b8ad044da7d35bcf27e9fba81c8
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/132701
> Commit-Queue: Anna Gringauze <annagrin@google.com>
> Reviewed-by: Alexander Aprelev <aam@google.com>
> Reviewed-by: Sigmund Cherem <sigmund@google.com>
> Reviewed-by: Gary Roumanis <grouma@google.com>
> Reviewed-by: Jake Macdonald <jakemac@google.com>
> Reviewed-by: Johnni Winther <johnniwinther@google.com>
Change-Id: I56426d2b6d831b2f8d8c57d468d0b54833a0062e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/134561
Commit-Queue: Anna Gringauze <annagrin@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Anna Gringauze
25559399ed