This library is being folded into dart:ui.

Fixes #83

Clean up the standalone examples

Our examples have been growing organically over time. This patch cleans
them up to illustrate specific aspects of Flutter.

@abarth

SawTooth

SizeObserver crusade: drawer

Horizontal and Vertical Draggables

Don’t require global keys for Input, fixes #1828

Drawer doesn't need a SizeObserver, since it only looks at the size
in event handlers. It can just go and probe the tree to read the size.

Also, change from using _kEdgeDragWidth to using _kWidth when figuring
out how much of the drawer to show when dragging it from the edge, since
that is more likely to match the drawer's width.

Expose more debugging tools in Stocks

Use mojo's scripts for downloading android tools on the bots

R=abarth@chromium.org

Remove address_book and mine_digger

These examples aren't particularly good models for new Flutter apps.

Bump the flutter_gallery_assets version, rename example apk dirs to android, remove BUILD.gn files

Remove gcm package from the repository.

rename example apk dirs to android
removed all BUILD.gn files

I moved it to https://github.com/mpcomplete/flutter_gcm for now.

Draggables were disappearing

I forgot to wrap the state changing in a setState. Oops.

Gallery Typography demo

Fix padding for ScrollableList

Previously we had totally wrong behavior. Now we have more correct behavior and
testing.

Fixes #1808

update gitignore and analysis_options

use the REVISION file when building ios apps

Reenable canvas test.

SizeObserver crusade: snap alignment

Try to locate the toolchain in the output layout used by the Flutter …

Remove the SizeObserver you need to use snap alignment in lists by
having the lists provide the size themselves in the callback.

Also, remove snapAlignmentOffset since we couldn't figure out how to
explain it and it's not really needed.

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

This reverts commit 196c881c.

Gallery Colors demo