This is intended for use in flutter_driver tests

This is used by debugging features that export Skia picture files
(see shell/common/picture_serializer.cc)

It adds ~20kb to a build of libsky_shell.so on Android

Now the engine always gives values in physical pixels.

Fixes https://github.com/flutter/flutter/issues/5783

Long live pointer data packets.

Previously we got some punctuation wrong.

Update buildroot (for target triple) and boringssl (for Clang IAS) fixes for non-ARM platforms. (#3077)

Rather than using mojom to encode pointer data, we now encode and decode it
manually. A future patch will remove the mojom codepath once the framework is
updated.

gclient now uses this to decide whether to look at a dependent
repo's DEPS file, which is needed for buildtools.

See https://groups.google.com/a/chromium.org/forum/#!topic/chromium-dev/NsGSfdLaDMI
for more detail.

This reverts commit cfc2b0cd.

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

Previously we would error out because of a lack of positional arguments.

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

If the platform requests setting up the resource context without making the context current, don’t attempt to create the GL native interface. (#3059)

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

Extract a common interface out of GaneshCanvas (into GPUCanvas) that can also be used for the Vulkan canvas. (#3058)

* 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.

The new boot sequence on Fuchsia now gives us the more accurate RGB_x888 pixel
format, which we should support. Also finish pushing pixels to the screen
before drawing new pixels.

This patch depends on another patch that hasn't landed yet.

This reverts commit 960da66f.

* Wire up to mojo::tracing::* infrastructure.

* Initialize tracing as early as possible.

* Make dependency specific to fuchsia.

Originally, this was a step that had to be carried out manually. Presumably because we did not want developers to download the Android SDK and NDK if they were not targetting Android. In practice, this is rarely the case. Even the buildbots unconditionally run the script (though they don’t need Android artifacts on the Mac since there is no Mac to Android builder).