This reverts commit 59bb2dba.

This reverts commit 0f557e72.

This reverts commit dac1baf4.

* iOS works

* Works on Android

* Take in commit number in iOS also. Get rid of image upload for Android. It's just a waste of bandwidth

* Tweak to fix on Travis

* first round fastlane working on Android

* clean up and start ios

* Partial iOS

* Got a fastfile that works on iOS

* Finalize Android push instructions

* Finalize instructions for iOS

* Extra cleanup and optipng

* Disable readme autogen and add a default readme

This reverts commit 36e3b103 to make the build green.

This reverts commit 25b1d43a.

This reverts commit 05d6b08f.

* add Android instrumentation test

* add devicelab test

* add to manifest.yaml

* rename _smoke_test.dart to _smoketest.dart to prevent flutter test from picking it up

* volatile fields; style fixes

* use ConditionVariable; fix sh script

* Roll android build tools to 25.0.3

* Roll android build tools to 25.0.3 in templates

This reverts commit 5ed2984e.

* Make new project template gradle-based for Android.

With this change, the 'new project' template uses the same gradle-based build for Android as the hello_services example. This has some implications on build performance, since we're now building a complete Android app instead of just combining a pre-compiled .dex with the Flutter assets.

The very first build is a little over 2x slower, since it needs to download gradle and build the build scripts before getting to the actual code. Subsequent builds with changes to the code are comparable to the old builds. Null builds are faster. Enabling the gradle daemon speeds up subsequent builds by around 5s.

* Move Flutter Gradle plugin to Flutter root.

* Update gradle example to support x86 in debug mode.

Changed the Flutter Gradle plugin a bit to better fit in with the
Android build.

Fixes #6136
Fixes #6864
Fixes #7539

The hello_services example can now be built both for Android and iOS.