I also removed the leading /, so it is now possible
to use shelldb start sky/sky_home to test.

Also fixed touch_demo.dart and sector layout to
work and not crash.

R=ianh@google.com

Review URL: https://codereview.chromium.org/1177343002.

The back button now triggers an event of type |back|.

R=eseidel@chromium.org, jackson@chromium.org

Review URL: https://codereview.chromium.org/1176373004.

This makes it easier to keep sky_home links working.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1185473002.

Ideally we would show a failwhale or some such, but
I don't know how we would bundle that file with our
APK yet.

Fixes https://github.com/domokit/mojo/issues/228

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1182633002.

TBR=eseidel@chromium.org

Review URL: https://codereview.chromium.org/1182613002.

Also:
 - Make RenderProxyBox non-abstract
 - Upgrade the old container.dart example
 - Minor fixes to ui_mode.dart to make this work

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1183503003.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/1184523002.

This is feature creep.  But it was simple and fun. :p

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1175393002.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1182563002.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1175403002.

Previously, it would always try to be as big as possible. This CL fixes a
problem with the search bar whereby the text wasn't centered. Now the Stack for
the text sizes its height properly and then becomes centered.

R=ianh@google.com

Review URL: https://codereview.chromium.org/1184483002.

There are still a number of problems with the search feature, but at least it
doesn't crash after this CL.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/1179643004.

This was added in 22da76be1ee64120f69ed35d6f21c85c31df08b6
but breaks all navigation (which is sadly only tested by our
demo site).

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1182543002.

This moves input.dart to editing2/, since that way we can define the layering as strictly unidirectional.
It also reorders a bunch of imports to fit the style guide.
I removed the old remnants of the widgets example, and put the fn2 examples into the examples/widgets/ directory, to parallel the framework directory names.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1177243002.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1179913002.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1180873003.

This CL wires up the opacity of the popup menu items and teaches the popup menu
how to draw its background at the right size.

R=ianh@google.com

Review URL: https://codereview.chromium.org/1175353002.

* Cherrypick crrev.com/333293 (freetype -> freetype-android).
* Update mojo/go/go.py to use android-16 (NDK API level 16), which is
  4.1 (first Jelly Bean). Chromium dropped support for 14.
* TODO (separately): also update tools/go/upload.py and upload new
  binaries?
* Roll android_tools (to match Chromium).
* Small fixes to match //base changes: base::ObserverList, TraceConfig,
  ThreadTicks, etc.
* Restore build/ls.py (and add it to the list of files to not roll).
* Remove the dependency on third_party/instrumented_libraries.
* Add "enable_topchrome_md = false" to build/config/ui.gni.
* Add build/config/ui.gni to files_not_to_roll in
  update_from_chromium.py. (We should probably get rid of the use_glib
  variable/argument, and others as well.)
* Remove mojo/tools/roll/{roll_network_service.py,
  roll_network_service_patches/network_service.patch}. These are for
  rolling from Chromium, whereas we now have/use monet.
* Roll buildtools (to match Chromium).
* Modify sanitizer gn/gni files to make it work (patch included).
  (Maybe the patch even works -- I haven't checked.)

TBR=rockot@chromium.org,jamesr@chromium.org,rogulenko@google.com

Review URL: https://codereview.chromium.org/1180693002.

This factoring will more code use BoxPainter in the future (in particular,
PopupMenu).

R=ianh@google.com

Review URL: https://codereview.chromium.org/1180633004.

Sprite nodes use Point instead of Vector2

Updates sprite test app

Refactors accounting for pivot points in sprites

Adds abstract NodeWithSize class in Sprites.

Refactors SpriteNode to Sprite

Refactors TransformNode to Node (may need to find another name as it conflicts with Sky's Node).

Sprite system now uses and caches transformation matrices.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1180703002.

The final animation is more involved, but this CL starts implementing the menu
animation by making it fade in.

R=ianh@google.com

Review URL: https://codereview.chromium.org/1174253003.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1178783002.

R=chinmaygarde@google.com

Review URL: https://codereview.chromium.org/1178773002.

R=abarth@chromium.org, abarth, hansmuller

Review URL: https://codereview.chromium.org/1181533003

Separate out the raw (directly manipulating sky.view) examples from the rendering (using RenderObject et al) examples.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1173233002

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1169983005.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1163323003.

This isn't perfect, since it makes non-minimal modifications
to the yaml and xml files.  In the yaml case it sorts the keys
and in the xml case it doesn't do the fancy attribute wrapping,
but this seems good enough to use.

R=abarth@chromium.org, johnmccutchen@google.com

Review URL: https://codereview.chromium.org/1179633003.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/1165283002.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1171573002.

R=eseidel@chromium.org, eseidel

Review URL: https://codereview.chromium.org/1180623003

R=abarth@chromium.org, ianh@google.com, abarth

Review URL: https://codereview.chromium.org/1174203002

This lays the groundwork for using fn widgets in static environments.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1178703002

Dispatch events to fn nodes for each RenderObject that the event goes through, instead of starting at the innermost target and just propagating through our tree.
This starts laying the groundwork for fn disconnected subtrees that are linked together into one RenderObject tree.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1181503002

R=abarth@chromium.org, hixie

Review URL: https://codereview.chromium.org/1181523002

These are now called Block, Stack, and Flex, respectively. Less verbose.

R=jackson@google.com, ianh@google.com

Review URL: https://codereview.chromium.org/1181533002.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1181453003

R=ianh@google.com

Review URL: https://codereview.chromium.org/1174153002.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1174143002

Previously it was propagating for a constant duration.

R=ianh@google.com

Review URL: https://codereview.chromium.org/1173173002.