For https://github.com/flutter/flutter/issues/33899

Test added:
- simple_animation_perf_ios

Test modified:
- backdrop_filter_perf_ios__timeline_summary

We'll add the CPU/GPU measurement to more iOS tests
once it's proven to be non-flaky.

git@github.com:flutter/engine.git/compare/04f567bdde40...2c4ed36c60ae

git log 04f567bdde40..2c4ed36c60ae --no-merges --oneline
2019-09-16 bkonyi@google.com Roll src/third_party/dart a8f433820b..7799f424f4 (3 commits)
2019-09-16 goderbauer@google.com a11y: expose max character count for text fields (flutter/engine#12269)
2019-09-16 skia-flutter-autoroll@skia.org Roll src/third_party/skia 86c48abc94f3..c22498502cda (1 commits) (flutter/engine#12300)


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04f567bdd Do not assume Platform.script is a Dart source file during training. (flutter/engine#12256) (#40603)


git@github.com:flutter/engine.git/compare/aef8f5e01a91...04f567bdde40

git log aef8f5e01a91..04f567bdde40 --no-merges --oneline
2019-09-16 rmacnak@google.com Do not assume Platform.script is a Dart source file during training. (flutter/engine#12256)


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git@github.com:flutter/engine.git/compare/3da554934b84...aef8f5e01a91

git log 3da554934b84..aef8f5e01a91 --no-merges --oneline
2019-09-16 bkonyi@google.com Roll src/third_party/dart f8f0b845c2..a8f433820b (1 commits)


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3da554934 Roll fuchsia/sdk/core/linux-amd64 from Ha3yC... to rwf0-... (flutter/engine#12298) (#40588)


git@github.com:flutter/engine.git/compare/8749d1722961...3da554934b84

git log 8749d1722961..3da554934b84 --no-merges --oneline
2019-09-16 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from Ha3yC... to rwf0-... (flutter/engine#12298)


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git@github.com:flutter/engine.git/compare/224ab48f1b20...8749d1722961

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2019-09-16 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from tg1Em... to xPX7p... (flutter/engine#12297)


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git@github.com:flutter/engine.git/compare/79ecdbf22044...224ab48f1b20

git log 79ecdbf22044..224ab48f1b20 --no-merges --oneline
2019-09-16 bkonyi@google.com Roll src/third_party/dart d0052c1b31..f8f0b845c2 (16 commits)


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79ecdbf22 Roll src/third_party/skia cb52badca04a..86c48abc94f3 (4 commits) (flutter/engine#12294) (#40564)


git@github.com:flutter/engine.git/compare/47991fe122d9...79ecdbf22044

git log 47991fe122d9..79ecdbf22044 --no-merges --oneline
2019-09-16 skia-flutter-autoroll@skia.org Roll src/third_party/skia cb52badca04a..86c48abc94f3 (4 commits) (flutter/engine#12294)


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47991fe12 Roll src/third_party/skia 2cb1315d99e4..cb52badca04a (5 commits) (flutter/engine#12293) (#40553)


git@github.com:flutter/engine.git/compare/31e5149a805b...47991fe122d9

git log 31e5149a805b..47991fe122d9 --no-merges --oneline
2019-09-16 skia-flutter-autoroll@skia.org Roll src/third_party/skia 2cb1315d99e4..cb52badca04a (5 commits) (flutter/engine#12293)


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git@github.com:flutter/engine.git/compare/834cd15010b2...31e5149a805b

git log 834cd15010b2..31e5149a805b --no-merges --oneline
2019-09-16 iska.kaushik@gmail.com Revert "Revert "Roll src/third_party/dart a554c8be6b..d0052c1b31 (22 commits)" (#12290)" (flutter/engine#12291)
2019-09-16 iska.kaushik@gmail.com Revert "Add iOS platform view mutation XCUITests to the scenario app (#11652)" (flutter/engine#12292)
2019-09-15 ychris@google.com Add iOS platform view mutation XCUITests to the scenario app (flutter/engine#11652)


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git@github.com:flutter/engine.git/compare/6fbbfe18e852...834cd15010b2

git log 6fbbfe18e852..834cd15010b2 --no-merges --oneline
2019-09-15 skia-flutter-autoroll@skia.org Roll src/third_party/skia cf4deab60e30..2cb1315d99e4 (1 commits) (flutter/engine#12283)
2019-09-15 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from gVBCH... to tg1Em... (flutter/engine#12285)


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git@github.com:flutter/engine.git/compare/3f76f55bc038...6fbbfe18e852

git log 3f76f55bc038..6fbbfe18e852 --no-merges --oneline
2019-09-15 iska.kaushik@gmail.com Fix flutter runner paths (flutter/engine#12289)
2019-09-15 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from Xfeuz... to Ha3yC... (flutter/engine#12286)


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git@github.com:flutter/engine.git/compare/00c8941daeae...3f76f55bc038

git log 00c8941daeae..3f76f55bc038 --no-merges --oneline
2019-09-15 iska.kaushik@gmail.com Revert "Roll src/third_party/dart a554c8be6b..d0052c1b31 (22 commits)" (flutter/engine#12290)
2019-09-14 30870216+gaaclarke@users.noreply.github.com FlutterViewController notify will dealloc (flutter/engine#12232)
2019-09-14 bkonyi@google.com Roll src/third_party/dart a554c8be6b..d0052c1b31 (22 commits)


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* Create 'center' template

Those tests are all non-flaky.

* Implement DropdownButton.selectedItemBuilder

git@github.com:flutter/engine.git/compare/fdb7bbf3192a...00c8941daeae

git log fdb7bbf3192a..00c8941daeae --no-merges --oneline
2019-09-13 iska.kaushik@gmail.com [flutter_runner] Change the path to artifacts (flutter/engine#12282)
2019-09-13 dnfield@google.com optionally skip builds (flutter/engine#12281)
2019-09-13 skia-flutter-autoroll@skia.org Roll src/third_party/skia 043dba039e0d..cf4deab60e30 (5 commits) (flutter/engine#12278)
2019-09-13 franciscojma@google.com [macos] Stops keeping track of text input models (flutter/engine#12267)


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git@github.com:flutter/engine.git/compare/e12decfdd210...fdb7bbf3192a

git log e12decfdd210..fdb7bbf3192a --no-merges --oneline
2019-09-13 dnfield@google.com Revert "Close the tree (#12268)" (flutter/engine#12272)


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git@github.com:flutter/engine.git/compare/7d8c6d9c1a5c...e12decfdd210

git log 7d8c6d9c1a5c..e12decfdd210 --no-merges --oneline
2019-09-13 xster@google.com Clean up after AppLifecycleTests (flutter/engine#12273)
2019-09-13 dnfield@google.com Close the tree (flutter/engine#12268)


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git@github.com:flutter/engine.git/compare/1b6344439062...7d8c6d9c1a5c

git log 1b6344439062..7d8c6d9c1a5c --no-merges --oneline
2019-09-13 xster@google.com Reland add some AppLifecycleTests


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1b6344439 Revert "Started taking advantage of Skia's new copyTableData to avoid (#10154)" (#12263)
0897b50cb Roll fuchsia/sdk/core/linux-amd64 from 6a4X4... to Xfeuz... (#12261)
186014ced Roll src/third_party/skia be194479d27f..043dba039e0d (23 commits) (#12262)
4debdda68 Roll fuchsia/sdk/core/mac-amd64 from JVZ_i... to gVBCH... (#12260)
9e7bd05c6 Roll src/third_party/dart d9489622be..a554c8be6b (10 commits)
850d80c35 Revert "Add some AppLifecycleTests (#11890)" (#12264)
46ff05346 Add some AppLifecycleTests (#11890)
ca4c3f6df Add an initial macOS version of FlutterAppDelegate (#12230)
6e6de9445 Roll dart to d9489622befb638c040975163cf9b8eba2ff057b. (#12255)
5c8611194 [glfw/windows] Stops keeping track of input models (#12234)
9c8465927 Editable text fix (#12249)
cce4b5b3c Roll src/third_party/dart e6887536aa..c74e68e501 (14 commits)
55c346aa0 Roll fuchsia/sdk/core/linux-amd64 from vuG5q... to 6a4X4... (#12252)
6beba539a Started taking advantage of Skia's new copyTableData to avoid (#10154)
3c6383f2d Revert "Smooth out iOS irregular input events delivery (#11817)" (#12251)
d6f0b64d0 pin and auto-install chrome version (#12228)
2698a0e93 Roll fuchsia/sdk/core/mac-amd64 from Ne2UA... to JVZ_i... (#12250)
dfa949836 Enable platform view keyboard input on Android Q (#12085)
bf91a8d62 Roll fuchsia/sdk/core/linux-amd64 from u7Q31... to vuG5q... (#12238)
58ecf5274 Roll src/third_party/skia 7c47d41067d4..be194479d27f (4 commits) (#12237)
c71580b48 Roll dart to e6887536aadc7fbd1990448989601cee0224958d. (#12235)
cf1d1569a Roll fuchsia/sdk/core/mac-amd64 from _nS67... to Ne2UA... (#12236)
bbb1f1246 Adjust iOS frame start times to match the platform info (#11802)
1de28d032 Roll src/third_party/skia 50f377e275c3..7c47d41067d4 (3 commits) (#12231)
da84d59f6 Revert "Manage iOS contexts separately (#12078)" (#12233)
4ac0663db Manage iOS contexts separately (#12078)
28d7900ed Roll src/third_party/skia 120e7d6766e4..50f377e275c3 (7 commits) (#12224)
5b94c8ae8 Revert "Roll src/third_party/dart be66176534..ec7ec4ecf7 (37 commits)" (#12223)
988efe376 Do not generate kernel platform files on topaz tree (#12222)
6c46a173e Don't disable toString in release mode for dart:ui classes (#12204)
80b8ed8f8 Roll fuchsia/sdk/core/linux-amd64 from 7gDBN... to u7Q31... (#12221)
7a8caaac7 Roll src/third_party/skia d96ef09317d6..120e7d6766e4 (2 commits) (#12220)
c8428ff46 Roll fuchsia/sdk/core/mac-amd64 from vDk46... to _nS67... (#12219)
2bdfb61a0 Namespace patched SDK names to not conflict with Topaz (#12218)
ff1fcfb5d Roll src/third_party/dart ca7baa4013..4d5e15abde (29 commits)
2b78c5953 Roll src/third_party/skia 14318c140949..d96ef09317d6 (2 commits) (#12216)
d74ed765d Roll src/third_party/skia b23a4f9d9442..14318c140949 (2 commits) (#12215)
c58c5939e Roll src/third_party/skia 26ac0467cb4c..b23a4f9d9442 (2 commits) (#12214)
5e85403cd Roll src/third_party/dart 7bbfd532de..ca7baa4013 (3 commits)
e2cc04c3f Roll fuchsia/sdk/core/linux-amd64 from R1yqu... to 7gDBN... (#12212)
6fbfb4503 Roll fuchsia/sdk/core/mac-amd64 from spUG2... to vDk46... (#12210)
96443e2df Roll buildroot and Fuchsia toolchain and unblock the Fuchsia/Linux autoroller manually. (#12209)
34cf4f716 Roll src/third_party/skia 4fe30e15c06c..26ac0467cb4c (2 commits) (#12207)
92d42c0f6 Only build the x64 variant of Fuchsia on the try-jobs. (#12206)
e174b4b9b Don't load Roboto by default (#12205)
efb32a6b9 Roll src/third_party/dart 300c3333d1..7bbfd532de (5 commits)
5566be141 Roll src/third_party/skia 66d8006c2bb1..4fe30e15c06c (11 commits) (#12202)
e9c998468 add a convenience CLI tool for building and testing web engine (#12197)
bfa43e179 [flutter_runner] Generate symbols for the Dart VM profiler (#12048)
954f1988c Add custom test plugin that supports screenshot tests (#12079)
d8379f967 Move the Fuchsia tryjob into a its own step and disable LTO. (#12190)
c12ac24a9 Roll src/third_party/dart 62f78a7abb..300c3333d1 (6 commits)
cab3a396e Roll src/third_party/skia b88894c8811b..66d8006c2bb1 (5 commits) (#12178)
2592d6efe [flutter_runner] Port the accessibility bridge from Topaz (#12054)
b569e8c2f Smooth out iOS irregular input events delivery (#11817)
dea813dd5 Roll src/third_party/dart ccb6ba948b..62f78a7abb (3 commits)
243879814 Make ImageShader implement Shader for web ui (#12161)
c31583a61 Roll src/third_party/dart 2e8d912848..ccb6ba948b (30 commits)
4542886f7 Roll src/third_party/skia 9e5c47936b17..b88894c8811b (3 commits) (#12151)
548998fdc Roll src/third_party/skia 1bf30ce852e0..9e5c47936b17 (2 commits) (#12129)
f1490a28e Roll src/third_party/skia 8cae1e95a23b..1bf30ce852e0 (2 commits) (#12106)
19b2d430b Roll fuchsia/clang/mac-amd64 from H1Qjc... to HfPKR... (#12088)
d81675550 Don't launch the observatory by default on each embedder unit-test invocation. (#12087)
39c806702 Roll src/third_party/skia c2d84bfa7421..8cae1e95a23b (4 commits) (#12086)
b19e75a52 Roll src/third_party/dart fb14babf59..2e8d912848 (65 commits)
03e773a90 Guard availability of user notification related methods to iOS 10.0 (#12084)
9c00c26c8 Add capability to add AppDelegate as UNUserNotificationCenterDelegate (#9864)
c2e82892a Add GradientRadial paintStyle implementation (#12081)
c3eea0ac2 Don't quote generic font families (#12080)
c2b3d888a Roll src/third_party/skia 28d40b2e7ade..c2d84bfa7421 (3 commits) (#12082)
a4de006f2 Remove ENABLE_BITCODE from Scenarios test app (#11839)
6e017f0cf Roll src/third_party/skia 4f2674da4bbc..28d40b2e7ade (4 commits) (#12077)
e911b0505 Roll src/third_party/skia 627d15588f4d..4f2674da4bbc (1 commits) (#12075)
359e66309 Roll src/third_party/skia 6c3bd09ead0f..627d15588f4d (3 commits) (#12074)
38d545ee1 Improve Unicode handling on Windows (#11899)
89efb4c3a Roll fuchsia/clang/linux-amd64 from VoYNW... to 2IT_b... (#12072)
dc8e30d9d Roll fuchsia/clang/mac-amd64 from XAazI... to H1Qjc... (#12071)
8cdb3afd6 Annotate nullability on FlutterEngine to make swift writing more ergonomic (#11808)
aa9aaa21d Roll src/third_party/skia f433336585ed..6c3bd09ead0f (1 commits) (#12070)
075a61fc4 Roll src/third_party/skia 69a426f5a427..f433336585ed (1 commits) (#12068)
a6105050c option for --no-lto for fuchsia (#12010)
be3982091 Roll src/third_party/skia 380561393385..69a426f5a427 (2 commits) (#12067)
6bafbf95b Roll src/third_party/skia c30f1a936d84..380561393385 (3 commits) (#12059)
e2ba93d74 Roll src/third_party/dart ec7ec4ecf7..fb14babf59 (19 commits)
723a2880e Roll fuchsia/clang/linux-amd64 from -mnHl... to VoYNW... (#12058)
35875e0f0 Revert "Manage resource and onscreen contexts using separate IOSGLContext objects (#11798)" (#12055)
a353f93d3 Manage resource and onscreen contexts using separate IOSGLContext objects (#11798)
c9ea4dba8 [flutter_runner] Refactor our build rules to make them more inline with topaz. (#12034)
50bdbd769 Document dependencies and remove support-v13 (#11912)
0c6a538d6 Roll src/third_party/dart be66176534..ec7ec4ecf7 (37 commits)
37f81cd07 Roll src/third_party/skia 080d210e7acc..c30f1a936d84 (21 commits) (#12031)

* Add constraints property, updated default constraints for ToggleButtons to 48x48

* Add kMinInteractiveDimension constant to ToggleButtons

On macOS and iOS, the build mode is converted to lowercase in the
Flutter-side script, allowing projects to pass configuration names
directly. This adds the same behavior to the tool_backend.dart script
currently used by Windows and Linux, so that Windows builds can do the
same (since the default configuration names used by VS, as in Xcode,
start with a capital letter).