Example: $ mojo:launcher mojo:spinning_square

This reverts commit cfc2b0cd.

The include paths for GL headers in mojo/public are busted

This reverts commit 92fdf25d.

This breaks the android x86 build:

gn gen --check in out/android_debug_x64
ERROR at //mojo/public/tools/BUILD.gn:59:9: Assertion failed.
        assert(current_cpu == "arm",
        ^-----
Only arm version prebuilt netowrk_service.mojo is available.
step returned non-zero exit code: 1

See https://github.com/flutter/flutter/issues/4478

* Namespaces have been updated to reflect the move from //flutter/sky/shell to //flutter/shell.
* shell/BUILD.gn file has been split into smaller GN files for each subcomponent of the shell (common, GPU, diagnostic, testing).
* GN dependencies have been rewritten to stop exposing common shell dependencies as public. Duplicates have also been removed.
* GPU subcomponent has been updated make it more suitable for Vulkan integration.
* The GLFW backend has been resurrected.

This adds media.dart which was omitted from flutter_services and fixes
incorrectly generated copyright headers to reflect the current year.

This adds a flutter_services package responsible for exposing the Dart
interfaces exported by the engine in a uniform fashion, regardless of
how and where the generated code for the interfaces are organized.

We need to block in the surfaceChanged callback until we can swap the GL
surface with some content in order to avoid flashing transparent and then
black.

Fixes https://github.com/flutter/flutter/issues/5373

This patch makes three API changes:

 * The dart:ui library now always communicates in physical pixels. The
   framework is responsible for converting to whatever logical coordinate
   system it wishes to use.
 * The textBaselien property is now on TextStyle rather than ParagraphStyle,
   which will let us choose which baseline to use on a per-span basis rather
   than on a per-paragraph basis.
 * This patch also removes the old MojoServices function endpoints.

Fixes https://github.com/flutter/flutter/issues/3779
Fixes https://github.com/flutter/flutter/issues/1360

This patch teachs us how to observe tasks on Fuchsia and kick off the
microtask queue.

(skia change 42943c8aa9c611c18ad0f1a30a27669f3d82239c)

This patch makes it easier to share the code with
//flutter/content_handler on Fuchsia.

This removes another //base dependency and will let us reuse this code
on Fuchsia.

Add a —disable-observatory flag to explicitly disable observatory even in non-product modes. (#3012)

We used to be able to toggle observatory via a command line flag. But now, we enable or disable observatory based on the Flutter product mode.

This also allows us to fix an issue where the —non-interactive flags was being hijacked by the Dart initialization logic to enable or disable observatory. However this flag was orignally meant for the standalone runner to launch either to run tests or to run a full graphics enabled window on the desktop.

We can now use the real thing on Fuchsia.

This makes the code easier to share between Fuchsia and stand-alone
Flutter.

After this patch, Flutter apps on Fuchsia can access their asset
bundles. Unlike other platforms, the asset bundles are stored in memory
rather than in the file system.

This patch abstracts where the content of the zip file is stored.
Currently, zip files are stored in the file system, but in Fuchsia,
we're going to store them in memory (at least for the time being).
Rather than represent a zip file as a path in the file system, we
instead use an UnzipperProvider, which can create zip::UniqueUnzipper
objects on demand.

* Remove references to unused GN files and flags.
* Fix Linux build.

This code is unused.