* avoid sending analytics on ci systems

* review comments

Fixes https://github.com/flutter/flutter/issues/3493

 - rebuild stateless widgets that have dependencies when their ancestors change but they don't

Fixes https://github.com/flutter/flutter/issues/3120

 - rebuild widgets that tried to inherit from a widget that didn't exist, when the widget is added

This adds a pointer and a bool to Element, which isn't great. It also adds a more or less complete tree walk when you add a new Inherited widget at the top of your tree, which isn't cheap.

* Revert "Revert "Mega gallery (#3647)" (#3659)"

This reverts commit ea62d31f.

* fix the dev/dartdoc.dart script

This reverts commit 9497fb56.

This patch broke the dartdoc step on the bots.

* working on a large benchmark app

* build a 100k saple app

* print sizes of other libs; scale to 60k lines

* test the generated app on travis

Cassowary doesn't have any additional dependencies and this simplifies things.

Fixes #2442

Rather that importing `package:newton/newton.dart` you can
`import package:flutter/physics.dart`.

Fixes #2441

* add google analytics

* send in the run target type

* track device type targets

* use the real GA code

* review comments

* rev to usage 2.0

* rev to 2.2.0 of usage; add tests

* review comments

* move driver create test to the flutter_tools package

* review comments

Fixes https://github.com/flutter/flutter/issues/3149

...by adding tests to our examples that don't import flutter_test, which
pins the relevant dependencies.

Also, provide more information when complaining about leaked transient
callbacks in tests.

Also, make tests display full information when they have an exception,
by bypassing the throttling we have for Android logging in tests.

Also, make the word wrapping not wrap stack traces if they happen to
be included in exception output.

Also, fix a leaked transient callback in the checkbox code.

We don't need this anymore.

Now that we don't require the Dart SDK to be in your path, it's hard to run
./dev/update_packages.dart. Instead, you can now run `flutter update-packages`.

Fixes #1906

Downloading these packages from cloud storage simplifies our deployment
story because we can upload to cloud storage automatically from the
buildbot.

This patch also switches the responsibility for downloading the engine
artifacts to update_engine.sh. Centralizing this responsibility ensures
that the packages and the binaries are always in sync.

This commit contains:

- FlutterDriver API for e2e tests usable in conjunction with package:test
- FlutterDriverExtension to be enabled by the application in order to
  allow an external agent to connect to it and drive user interactions and
  probe into the element tree
- initial implementations of tap, findByValueKey and getText commands (to
  be expanded in future PRs)

This patch again stops Traivs from uploading docs now that the new infra seems
to be better at it.

This reverts commit 196c881c.

This reverts commit 8a458098.

We now upload these from Chromium infra.

This helps people check that all the tests will pass before they send a PR.

I also stopped pushing docs to domokit.org I presume we
were doing that to not break old links.  @abarth

@sethladd

Add the -q (quiet) flag to gsutil uploads.

gen dartdoc using the flutter styles

That site is now live.

I had to add a setLocale method to WidgetTester and
split the code in FlutterBinding which handled locale
changes to allow me to dispatch a locale change w/o actually
changing what the c++ code reports as the locale.

Also added the test to Travis.

@abarth @jason-simmons

The patch teaches Travis how to update our API docs continuously as we land
patches in master.

Now you can run tests with and without --flutter-repo with a prebuilt binary on
Linux.

Fixes #307

This patch still requires a locally built engine. I'll remove the need for a
locally built engine in a future patch.

Fixes #278

This updates the Flutter tools to match the proposed new packaging of artifacts
in the engine release script.
* The GCS URL for artifacts is now gs://mojo/flutter/$revision/$platform
* Categories have been removed from the Artifact class
* All artifacts for a given platform now live in a zip file.  If an artifact
  is not present in the local cache, then the zip will be downloaded and
  extracted.

Note that darwin-x64 artifacts go through a different process that (for now)
continues to use the old format.