This reverts commit 09e68c33.

AOT snapshotter is broken at this engine rev.

https://flutter-dashboard.appspot.com/api/get-log?ownerKey=ahNzfmZsdXR0ZXItZGFzaGJvYXJkclgLEglDaGVja2xpc3QiOGZsdXR0ZXIvZmx1dHRlci8wOWU2OGMzM2NjZGIzNTVmZWRkNzVhODcxNmRlMDU1MWM3NzJmMmRlDAsSBFRhc2sYgICAgICAwAgM

Change the Gallery sample Android package to not conflict with the version published in Play (#5579)

Add update dialog to gallery, open source part of #4626

`Process.start` seems to be escaping as needed.

* test flutter create project dart file is properly formatted

* restore driver-test

* cleanup lint warnings

* address comment

Previously, `flutter build` products were emitted to build/ and only
xcode build products were emitted to $SYMROOT.

If the input test script contains a bad import, sky_shell will fail to
execute main(), in which case a connection to /runner is never
established and the _ServerInfo.socket never completes.

This change works around this by issuing a request on /shutdown when
sky_shell exits.

* don't resolve symlinks as part of which

* update method dartdoc

Changed the ExpandIcon constructor to take a default expansion state.
If the widget gets rebuilt with a different expansion value, the
animation will trigger but the callback will not.

Do not throw when resolving a local engine if the .packages map does not include the flutter package (#5519)

TBR

Alternative PowerShell script. Fix missing pop in BAT file (in case of fatal error). Exit gracefully. Force SDK Path. (#5484)

The type of rejects should be List<dynamic> to match the type that
DragTarget expects. Since the function doesn't use rejects anyway,
there's no need to tighten the type.

Fixes one of the strong_mode_static_type_error errors that is currently
being ignored.

Added a widget that implicitly animates the size of it child.

Added a widget that automaitcally rotates the expansion icon and
offers a callback interface that captures presses.

Using IconButton inside of a bigger Material before would result
in having a hit box as large as the whole Material. This commit
constrains the size of the hit box and splashes to the default
diameter of a splash.