* Revert "Revert "Run Flutter on iOS and Android with color correct Skia (#3743)" (#3775)"

This reverts commit cfe70e07.

* Enable sRGB on IO thread, too

* Add 4444 as a fallback rendering mode

* Use bare ptr to SkColorSpace (not sk_sp) in PrerollContext

Fixes https://github.com/flutter/flutter/issues/10855

If restartInput is called twice in quick succession, then the IME may output
warnings related to usage of the obsolete connection resulting from the first
call.

Fixes https://github.com/flutter/flutter/issues/10730

Fixes https://github.com/flutter/flutter/issues/10571

* Revert "Fix licenses_lib golden file (#3798)"

This reverts commit d8ac43c3.

* Revert "Remove ParagraphConstriants (#3796)"

This reverts commit 8ccf767f.

* Revert "Reland "Initial integration of libtxt with Flutter alongside Blink." (#3793)"

This reverts commit 3c049219.

ASL was deprecated in iOS 10 and started causing SIGPIPE issues in iOS
10.3. Under the iOS 8 SDK, syslog() stopped working as of iOS 10.3
devices, with the result that ASL stdout/stderr forwarding was the only
means of logging. The engine now builds against the iOS 10 SDK, with
deployment target of iOS 8. Under this SDK, syslog() works correctly
across all supported OS versions.

NOTE: This is a temporary fix to get developers unblocked. While this
does fix the SIGPIPE issue and put iOS logging on par with the Android
solution, the intent is to move to a dedicated communication channel
with flutter_tools that isn't log-based.

See https://github.com/flutter/flutter/issues/10813

* Transition to Hybrid lib/txt and blink text system.

This reverts commit 1e9e134d.

* Revert "Enable line join styles and miter limit. (#3777)"

This reverts commit 5403f65b.

* Revert "Revert "Update switches to use StringView." (#3784)"

This reverts commit 80f039ff.

* Revert "Initial integration of libtxt with Flutter alongside Blink. (#3771)"

This reverts commit c548c65b.

Fixes https://github.com/flutter/flutter/issues/10748

See https://github.com/flutter/flutter/issues/10701

This reverts commit ffe8181f.

In particular, this avoids some unnecessary calls to InputMethodManager.restartInput
that caused noticeable lag when moving the cursor.

Fixes https://github.com/flutter/flutter/issues/9928

Both the following, which we also support, are deprecated in UIKit:

* `application:handleOpenURL:`
* `application:openURL:sourceApplication:annotation:`

Expose performActionForShortcutItem call to all registered plugins so we can handle quick actions (#3763)

* Expose performActionForShortcutItem call to all registered plugins so we can handle quick actions

* Should return BOOL not void

* clang-formatted

* Adding SemanticsFlag.isSelected

* typo

* Run Flutter on iOS and Android with color correct Skia (#3716)

***Turns on color correct rendering for Android and iOS
***Communicates dst color space to raster cache
***Turns on color space aware image decoding

Test:
***color_testing_demo on Pixel XL
***flutter_gallery on iPad Mini and iPad Pro (haven't figured out how to run manual_tests on iOS)

TODO:
I needed to split up this CL somewhere. These are follow-up tasks.
***Make desktop backends color correct
***Make debugging tools (ex: encoding frames to png) preserve color space
***Investigate using UIKit API to allow iOS to fine tune color space of rendered content

This creates a `FlutterFragmentActivity` class that extends
the Android v4 Support librray's `FragmentActivity` class.
However, we intentionally do not bundle the support library
with our engine, so apps that wish to use this class are
responsible for including the support library .jar file in
their runtime deps when creating the final app.

flutter/flutter#10072

This factors the functionality that was in `FlutterActivity`
to live in `FlutterActivityDelegate`. This will allow the creation of a
`FlutterFragmentActivity` that has the same core functionality, which in
turn unlocks certain Android plugins that choose to require the v4
support library (like Google Sign-In).

https://github.com/flutter/flutter/issues/10072

* Retain the parent of a SemanticsObject

This fixes the last known crash in iOS accessibility.

* rework memory management

* review comments

***Turns on color correct rendering for Android and iOS
***Communicates dst color space to raster cache
***Turns on color space aware image decoding

Test:
***color_testing_demo on Pixel XL
***flutter_gallery on iPad Mini and iPad Pro (haven't figured out how to run manual_tests on iOS)

TODO:
I needed to split up this CL somewhere. These are follow-up tasks.
***Make desktop backends color correct
***Make debugging tools (ex: encoding frames to png) preserve color space
***Investigate using UIKit API to allow iOS to fine tune color space of rendered content

Disables auto-capitalization on iOS text fields for TextInputTypes other
than text.

Some keyboards (e.g., on some Samsung devices, SwiftKey) ignore
InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS and require
InputType.TYPE_TEXT_VARIATION_PASSWORD.