We can't have two copies of |embedder.dart| or |shell.dart| because they take
ownership of some underlying Mojo handles. Instead of duplicating the code,
this CL makes the old locations just export all the symbols from the new
location. I've also done the same with fetch.dart to avoid code duplication.

Finally, I've removed image_cache.dart in the old location because the only
clients already live in the new world and ought to use the new location.

TBR=ianh@google.com

Review URL: https://codereview.chromium.org/1179923004.

Some files are moved by this:
  Copy framework/node.dart into types/ - preparing for framework/'s decomissioning.
  Move app/scheduler.dart into sky/scheduler.dart - "app" doesn't really make sense.

As part of the SkyBinding cleanup, I made the hit-testing less
RenderBox-specific, by having the HitTestEntry.target member be a
HitTestTarget, which is an interface with the handleEvent() function,
which is then implemented by RenderBox. In theory, someone could now
extend hit testing from the RenderBox world into their own tree of
nodes, and take part in all the same dispatch logic automatically.

This involved moving all the hit testing type definitions into a new
sky/hittest.dart file.

Renamed SkyBinding._app to SkyBinding._instance for clarity.

Moved code around in SkyBinding so that related things are together.

Made WidgetSkyBinding use the existing SkyBinding.instance singleton
logic rather than having its own copy.

I also added some stub README.md files that describe dependencies.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1187393002.

Move app/view.dart to rendering/sky_binding.dart since it's part of the RenderObject API, really (it knows about RenderView intimately).
The tests pass. I didn't check every last example.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1183913006.

Also, trim the redundant |Mode| suffix from the TransferMode names.

R=ianh@google.com

Review URL: https://codereview.chromium.org/1188003006.

Buttons and menu items use onPressed. Also, don't pass along the sky.Event
because that's a lower-level concept.

I've also reordered parameter lists to put the |child| argument last in a
number of places.

Also, fixed a bug where FloatingActionButton was missing syncFields.

R=ianh@google.com

Review URL: https://codereview.chromium.org/1188993003.

Defined constants for all 9 CSS font-weight values
with conventional names from the "Common weight
name mapping" section of
https://developer.mozilla.org/en-US/docs/Web/CSS/font-weight.

The FontWeight enum now just enumerates the actual
CSS weight values.

I've moved the TextStyle class into its own file.

R=ianh@google.com

Review URL: https://codereview.chromium.org/1173323004.

This also moves the test for stocks into a new tests/examples/
directory, where we can put tests that test the examples.

TBR=abarth

Review URL: https://codereview.chromium.org/1182223004.

TBR=abarth

Review URL: https://codereview.chromium.org/1194473004.

This removes the requirement that things with the same type things have unique keys.
Now, anything without a key is assumed to be interchangeable.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1178723010.

R=ianh@google.com
TBR=hixie

Review URL: https://codereview.chromium.org/1185283004.

The underlying problem is that we lacked a RenderObjectWrapper for the
RenderView, which meant we couldn't handle changing the RenderObject that was
the root of the RenderView. This CL introduces a RenderViewWrapper and uses it
in a new AppContainer widget root. This change allows us to make App a
non-magical Component that is inserted into the AppContainer in the newly
introduced runApp function.

R=ianh@google.com

Review URL: https://codereview.chromium.org/1184823006.

R=abarth@chromium.org, abarth

Review URL: https://codereview.chromium.org/1195493002.

This fixes the test

TBR=abarth

Review URL: https://codereview.chromium.org/1192533002.

R=abarth@chromium.org, abarth

Review URL: https://codereview.chromium.org/1191863002.

This is a completion of Eric's WIP patch:
https://codereview.chromium.org/1179663005/

Low level support for creating a paragraph that contains
runs of styled text. The styles may be nested.

The Paragraph and RenderParagraph classes have been
replaced by Inline and RenderInline. Styled text is defined
with a tree of InlineText and InlineStyle objects.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1177833012.

R=abarth@chromium.org, abarth, hixie

Review URL: https://codereview.chromium.org/1181773006.

Also, move a widget example from examples/raw/ to examples/widgets/

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1190793002.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1187153002.

R=abarth@chromium.org, abarth, hixie

Review URL: https://codereview.chromium.org/1186273002.

TBR=abarth

Review URL: https://codereview.chromium.org/1187463013.

Create an example app that demonstrates interactive coordination of an fn tree and a raw RenderObject tree.

Sector changes:
- implement the intrinsic sizing box API on RenderBoxToRenderSectorAdapter
- remove some debug print statements
- fix getIntrinsicDimensions() on RenderSolidColor to return true values
- factor out the default demo

RenderObject changes:
- BoxConstraints.isInfinite() now returns true only if both dimensions are infinite

fn changes:
- implement UINodeToRenderBoxAdapter
- rename RenderObjectToUINodeAdapter to RenderBoxToUINodeAdapter

Tests:
- add a test for sector layout
- make TestRenderView support being run without the unit test framework

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1175423007.

We need the key to be a String even though we claimed we could support any
Object. Also, clean up some style nits including shortening the |root| getters
on OneChildRenderNodeWrappers.

Fixes https://github.com/domokit/sky_sdk/issues/26.

TBR=ianh@google.com

Review URL: https://codereview.chromium.org/1173293005.

FlexExpandingChild -> Flexible
StackPositionedChild -> Positioned

Also, name the child argument |child| for consistency.

TBR=ianh@google.com

Review URL: https://codereview.chromium.org/1179763009.

R=jackson@google.com

Review URL: https://codereview.chromium.org/1179943005.

Make old users of RenderSizedBox use RenderConstrainedBox.
Change the semantics of BoxDecoration.apply* to actually apply the provided constraints to the current constraints, rather than the previous behaviour of merging them neutrally.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1189603003.

R=ianh@google.com, hixie

Review URL: https://codereview.chromium.org/1190573002.

TBR=hixie

Review URL: https://codereview.chromium.org/1188573004.

Make stock2 exactly match the original stock demo.

R=ianh@google.com

Review URL: https://codereview.chromium.org/1187563006.

Deletes old test game

Demo game is now playable

Updates demo game with steering and changes in sprites

Fixes smaller bugs in sprites

Refactor class names in game demo

Strips Box2D from game

Fixes ordering in game node

Adds frameRate property to SpriteBox and improves update methods.

Fixes node to box transformations for hit tests

Fixes minor code issues

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1179333002.

This CL moves the bulk of the SkyView code out of the |framework| directory
because the |framework| directory was redundant in Dart package import
declarations.

TBR=ianh@google.com

Review URL: https://codereview.chromium.org/1177383006.

Although the basic widgets are wrappers, that's an implementation detail and
shouldn't be encoded in the name of the library.

TBR=ianh@google.com

Review URL: https://codereview.chromium.org/1182983002.

Verify that callers correctly set parentUsesSize if they use the child's size (and fix a few cases that didn't).
This introduces a bunch of code that should only run in debug builds, but we don't have #ifdefs yet.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1182933003.

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

Review URL: https://codereview.chromium.org/1178293004.

Make it easier to debug examples/widgets/container.dart, since it is currently showing a crazy clipping/transform bug.

TBR=abarth

Review URL: https://codereview.chromium.org/1186653003.

We can use these intents to move the demo launcher to the new world.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/1187583002.

This is a completion of Hans's WIP patch:
https://codereview.chromium.org/1176133002/

Makes it possible for us to style text in fn2 apps.

The title style in the toolbar doesn't look quite right
but as far as I can tell its the same color as the
old typography code produced.  Will need further investigation.

Fixes #213

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

Review URL: https://codereview.chromium.org/1178913003.

Make Material actually create material, with opinions about what that
means.

Make FloatingActionButton use this.

Make Scrollable use this.

Make BoxDecoration support drawing a circle instead of a rectangle, so
that floating action button doesn't need a custom painter.

Implement RaisedButton (and remove button.dart, since there's no
"button" in Material Design).

Make InkWell have a "child" argument instead of "children", and not
have it introduce a Flex into the hierarchy.

Update container.dart example. Clean up some imports.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1179713004.

Make it possible to test that the stock app doesn't crash on startup and paints the basic scaffold more or less correctly.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1177043008.

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.