Reland of #50707

af426986b Roll fuchsia/sdk/core/linux-amd64 from _k1WT... to Fjow3... (flutter/engine#17127) (#52539)

d7a00b8b0 Roll src/third_party/dart 7c2f62406bef..eb9c26bd378f (15 commits) (flutter/engine#17124) (#52523)

85e6b01ae Roll src/third_party/dart 33349076ee7f..7c2f62406bef (23 commits) (flutter/engine#17120) (#52519)

* Change onSort and add tests

* Add doc

* Regression test

* Remove if (true)

* Make test clearer

* Clearer comment

* TapGestureRecognizer no longer adds the pointer after it resets.

* Adds an assertion to make sure TapGestureRecognizer.startTrackingPointer is never called when _down is null

This reverts commit 1bf9d6f4.

This adds generation of some C++ keycode maps for various platforms.

This isn't meant for general use: it's so that the Flutter authors can keep the keycodes up to date with the Chromium and Android (and other) sources. It doesn't run continuously, it's only run occasionally (manually) to update the maps, because they don't change very often, and there is often manual work needed to make it function.

In this PR, I added output of various .cc files that write into an engine repo situated next to the flutter repo on disk. This is a starting point for implementing platform-side handling of key events.

c28d23068 Roll fuchsia/sdk/core/linux-amd64 from Yk03L... to _k1WT... (flutter/engine#17112) (#52508)

1aaf16988 Roll src/third_party/skia f0140ee00f95..1743144ab839 (2 commits) (flutter/engine#17111) (#52494)

* Fix suppportedLocales list

* Refactor integration tests for gen_l10n tool to catch exceptions

Reland of #52149

Revert "[flutter_tools] Update background isolates when performing hot reload/restart (#52149)" (#52476)

This reverts commit edd03a1a.

Just some very minor doc changes: an adjustment of my comments in #51495, and a typo fix.

When performing a hot restart, collect isolates without an attached flutter view and send a kill signal. These must have been spawned by running main, so restarting without removing them leads to isolate duplication.

When performing a hot reload, ensure that we send a reloadSources command to every isolate and not just uiIsolates.

* Expose --header and --header-file arguments for gen_l10n

Adds an overflow menu to the text selection menu on Android when the items overflow.

2020-03-11 skia-flutter-autoroll@skia.org Roll src/third_party/dart 4093d08271f6..37530145ff53 (4 commits) (flutter/engine#17090)
2020-03-11 skia-flutter-autoroll@skia.org Roll src/third_party/skia bf355123ae3b..0340292972b9 (9 commits) (flutter/engine#17089)
2020-03-11 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from r_oCI... to 0Z8VF... (flutter/engine#17087)
2020-03-11 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from v32mJ... to X3Xm2... (flutter/engine#17086)
2020-03-11 chinmaygarde@gmail.com Remove the unused method on iOS surface to make the resource context current. (flutter/engine#17084)
2020-03-11 chinmaygarde@gmail.com Revert "Add support for the Metal backend on all iOS builds. (#17080)" (flutter/engine#17088)
2020-03-11 skia-flutter-autoroll@skia.org Roll src/third_party/dart ace1d9b9213a..4093d08271f6 (12 commits) (flutter/engine#17082)
2020-03-11 chinmaygarde@google.com Add support for the Metal backend on all iOS builds. (flutter/engine#17080)
2020-03-11 skia-flutter-autoroll@skia.org Roll src/third_party/skia d3f67dbf9f36..bf355123ae3b (9 commits) (flutter/engine#17079)
2020-03-11 chinmaygarde@google.com Disable Embedder11yTest::A11yTreeIsConsistent to unblock LUCI. (flutter/engine#17081)
2020-03-10 chinmaygarde@google.com Gather demangled stack traces and report the same to console on crashes. (flutter/engine#16450)
2020-03-10 chinmaygarde@google.com Implement asynchronous texture uploads when using the Metal backend on iOS. (flutter/engine#17046)
2020-03-10 skia-flutter-autoroll@skia.org Roll src/third_party/dart 97674262bc29..ace1d9b9213a (14 commits) (flutter/engine#17078)
2020-03-10 egarciad@google.com Add RTree to flow (flutter/engine#16923)
2020-03-10 skia-flutter-autoroll@skia.org Roll src/third_party/skia 78dac6dcb222..d3f67dbf9f36 (6 commits) (flutter/engine#17072)
2020-03-10 flar@google.com Revert "Fix bounds of image_filter_layer (#16960)" (flutter/engine#17074)
2020-03-10 chinmaygarde@google.com Use the ELF loader to setup AOT symbols in benchmark runner. (flutter/engine#17051)
2020-03-10 skia-flutter-autoroll@skia.org Roll src/third_party/skia 23899c64e3db..78dac6dcb222 (19 commits) (flutter/engine#17069)
2020-03-10 aam@google.com Roll dart to 97674262bc29447dc59d5c93024b18b27d4bcf98. (flutter/engine#17067)
2020-03-10 ferhat@gmail.com [web] Fixes for Firefox & Safari double underline decoration bugs. (flutter/engine#16994)
2020-03-10 dnfield@google.com Avoid capturing this unsafely in MultiFrameCodec (flutter/engine#16824)
2020-03-10 yjbanov@google.com Revert "Revert "fix shadows and mask filter blurs (#16963)" (#17008)" (flutter/engine#17040)
2020-03-10 ferhat@gmail.com Add support for firefox mac installer. Update web_ui pubspec for http.wq (flutter/engine#17044)
2020-03-09 yjbanov@google.com fix "TREE INCONSISTENT" noise in compositing_test.dart (flutter/engine#16995)
2020-03-09 yjbanov@google.com Add more child lifecycle tests (flutter/engine#16689)
2020-03-09 chris@bracken.jp Add libfreetype6-dev to desktop Linux dependencies (flutter/engine#17020)
2020-03-09 liyuqian@google.com Disable shell benchmarks (flutter/engine#17038)
2020-03-09 flar@google.com Fix bounds of image_filter_layer (flutter/engine#16960)
2020-03-09 liyuqian@google.com Record fml and shell benchmarks (flutter/engine#16991)
2020-03-09 skia-flutter-autoroll@skia.org Roll src/third_party/skia c56950442dd1..23899c64e3db (11 commits) (flutter/engine#17033)
2020-03-09 yjbanov@google.com use commit date instead of author date (flutter/engine#17032)