Docs improvement after seeing "null" showing up for TextWidthBasis.

* Register getFlutterVersion service in flutter_tools.

* Add short revision ids to response.

* Rename method and remove obsolete comments.

* Fix broken test by adding sendPeerNotifications flag.

* Implement mockPeer.sendNotification.

git@github.com:flutter/engine.git/compare/e7f9ef6aa0b9...cd920398e40e

git log e7f9ef6aa0b9..cd920398e40e --no-merges --oneline
2019-09-04 mouad.debbar@gmail.com Handle new navigation platform messages (flutter/engine#11880)
2019-09-04 shihaohong@google.com Android 10+ View.getSystemGestureExclusionRects (flutter/engine#11451)
2019-09-04 aukwat@gmail.com Fix deleting Thai vowel bug on iOS (skip string range sanitization) (flutter/engine#11807)
2019-09-04 bkonyi@google.com Roll src/third_party/dart 4bd13a74d9..c3db2e3ee0 (4 commits)
2019-09-04 skia-flutter-autoroll@skia.org Roll src/third_party/skia c2dc9c864844..e7366841663b (2 commits) (flutter/engine#11878)
2019-09-04 iska.kaushik@gmail.com [flutter_runner] Add common libs to the test far (flutter/engine#11875)
2019-09-04 bkonyi@google.com Roll src/third_party/dart fd27e795ba..4bd13a74d9 (5 commits)
2019-09-04 aam@google.com Provide dart vm initalize isolate callback so that children isolates belong to parent's isolate group. (flutter/engine#9888)
2019-09-04 stuartmorgan@google.com Add style guide and formatting information (flutter/engine#11669)
2019-09-04 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from BR_-u... to LKWtB... (flutter/engine#11874)
2019-09-04 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from dRCdb... to m-hNV... (flutter/engine#11873)
2019-09-04 skia-flutter-autoroll@skia.org Roll src/third_party/skia 77743492418e..c2dc9c864844 (22 commits) (flutter/engine#11872)
2019-09-04 iska.kaushik@gmail.com Add a sample unit test target to flutter runner (flutter/engine#11847)
2019-09-04 iska.kaushik@gmail.com Support building standalone far packages with autogenerating manigests (flutter/engine#11849)
2019-09-04 bkonyi@google.com Roll src/third_party/dart 622747502e..fd27e795ba (9 commits)
2019-09-04 bkonyi@google.com Roll src/third_party/dart 54fdd559d8..622747502e (1 commits)
2019-09-04 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from KqidK... to BR_-u... (flutter/engine#11845)
2019-09-04 skia-flutter-autoroll@skia.org Roll src/third_party/skia 452ce044f0db..77743492418e (12 commits) (flutter/engine#11837)
2019-09-04 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from -kKi5... to dRCdb... (flutter/engine#11840)
2019-09-04 bkonyi@google.com Roll src/third_party/dart 36985859e4..54fdd559d8 (65 commits)
2019-09-04 chinmaygarde@google.com Minor tweaks to the Doxygen theme. (flutter/engine#11576)
2019-09-04 matthew-carroll@users.noreply.github.com Updated API usage in scenario app by deleting unnecessary method. (flutter/engine#11844)
2019-09-03 garyq@google.com Fix RTL justification alignment with newline (flutter/engine#11842)
2019-09-03 matthew-carroll@users.noreply.github.com Rename first frame method and notify FlutterActivity when full drawn (#38714 #36796). (flutter/engine#11357)
2019-09-03 skia-flutter-autoroll@skia.org Roll src/third_party/skia 8050d94ae227..452ce044f0db (1 commits) (flutter/engine#11834)
2019-09-03 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from a8wlq... to KqidK... (flutter/engine#11833)
2019-09-03 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from pVy4h... to -kKi5... (flutter/engine#11832)
2019-09-03 skia-flutter-autoroll@skia.org Roll src/third_party/skia 033c4014b788..8050d94ae227 (2 commits) (flutter/engine#11831)
2019-09-03 skia-flutter-autoroll@skia.org Roll src/third_party/skia 94c66475560d..033c4014b788 (2 commits) (flutter/engine#11830)


If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC franciscojma@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

This reverts commit e3f8d055.

This reverts commit 72cacb40.

* Automatic focus highlight mode for FocusManager

This re-lands the highlight mode change.

* Review Changes

This reverts commit 5e7beaf7.

* WIP

* trying out different numbers

* apply intrinsic width and height

* update

* update behavior

* documentation

* wip

* fix tests

* constants

* respect theme

* respect theme

* add new test

* add new test

* update

* review

* update golden commit hash

* WIP on web plugin registry

* WIP on registering plugins

* WIP on web plugin registration

* Only generate `package:flutter_web_plugins` imports if plugins are
defined

* Add parsing test

* Add documentation

* Fix analyzer warnings

* add license headers

* Add tests for package:flutter_web_plugins

* Run `flutter update-packages --force-upgrade`

* Fix analyzer errors

* Fix analyzer error in test

* Update copyright and remove flutter SDK constraints

* Enable tests since engine has rolled

* add flutter_web_plugins tests to bots

* Create an empty .packages file for WebFs test

fix sliverfixedextent with sliverchildbuilderdelegate does not correct calculate max scroll extent (#39142)

One of our linux/android Moto G4 has alerts (emergency, amber, etc.)
turned on. That's probably the cause of the flakiness. I've turned it
off.

Let's mark this as non-flaky and see if it's fixed. If not, I'll move it
to mac/android and see if that fixes the flakiness.

I think the most important thing to do right now is to mark it as
non-flaky so those who really break the test could get a notification.

This changes the behavior of text fields, Material buttons, and Chips so that if they are disabled they lose focus. Before this change, it was possible to disable a control and then use focus traversal to reach it anyhow, and in the case of text fields, enter text into a disabled field.

Fixes #33985

e7f9ef6aa Roll src/third_party/skia 8203a180ea5d..94c66475560d (1 commits) (flutter/engine#11826) (#39713)


git@github.com:flutter/engine.git/compare/51a376d73ba1...e7f9ef6aa0b9

git log 51a376d73ba1..e7f9ef6aa0b9 --no-merges --oneline
2019-09-03 skia-flutter-autoroll@skia.org Roll src/third_party/skia 8203a180ea5d..94c66475560d (1 commits) (flutter/engine#11826)


If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC garyq@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

51a376d73 [Windows] Update API for alternative Windows shell platform implementation (flutter/engine#11327) (#39710)


git@github.com:flutter/engine.git/compare/3deb8f5e45e1...51a376d73ba1

git log 3deb8f5e45e1..51a376d73ba1 --no-merges --oneline
2019-09-03 james@clarkezone.net [Windows] Update API for alternative Windows shell platform implementation (flutter/engine#11327)


If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC garyq@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

3deb8f5e4 Roll fuchsia/sdk/core/linux-amd64 from 0qRbW... to a8wlq... (flutter/engine#11825) (#39709)


git@github.com:flutter/engine.git/compare/dcf5d6ab3447...3deb8f5e45e1

git log dcf5d6ab3447..3deb8f5e45e1 --no-merges --oneline
2019-09-02 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from 0qRbW... to a8wlq... (flutter/engine#11825)


If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC garyq@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md