The directory may be invalid when running shell_unittests because
some tests call SetCacheDirectoryPath and then delete the directory.
Later tests that try to use that cache base path will be unable to
open the directory.

This speculatively disables the ApplicationLifecycle Scenarios iOS tests
which continue to fail after being re-enabled in flutter/engine#21087.

Related P0 issue: https://github.com/flutter/flutter/issues/61620

This gets us to latest and fixes a warning about a missing cast.

This rolls buildroot to f83d1d75216e97fb696434bca1cb9a4e7a570fb6

Related patch: https://github.com/flutter/buildroot/pull/401

* updating the documentation after integration_test migration

* fix typos

* address reviewer comments

* add link for build modes

Make a single-param ctor explicit in order to prevent surprising
implicit conversions.

Add a check for zero message-size and don't malloc/memcpy the incoming
message in those cases.

Add braces where they were missing.

Add copyright headers in a few files where they were missing.

Trim trailing blank comment line where present, for consistency with
other engine code.

Use the standard libtxt copyright header in one file where it differed
(extra (C) and comma compared to other files in libtxt).

This also amends tools/const_finder/test/const_finder_test.dart to look
for a const an additional four lines down to account for the copyright
header added to the test fixture.

This re-enables the iOS Scenarios tests which have been flaky in the
last couple days.

Disabling two tests where we've seen the flakes:
* AppLifecycleTests testFlutterViewControllerDetachingSendsApplicationLifecycle
* FlutterViewControllerInitialRouteTest testSettingInitialRoute

This reverts commit 0c6c265a.

https://dart.googlesource.com/sdk.git/+log/72393cc698da..1abce6d054ad

2020-09-11 dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com Version 2.10.0-115.0.dev
2020-09-10 dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com Version 2.10.0-114.0.dev
2020-09-10 dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com Version 2.10.0-113.0.dev

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dart-sdk-flutter-engine
Please CC dart-vm-team@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

- Standardize on lowercase for windows.h
- Don't define NOMINMAX before including windows.h in (some) public
  wrapper headers, since it causes a warning when combined with setting
  NOMINMAX at the build level, which is the more robust way to avoid
  issues with min/max and windows.h

The template now uses the FlutterEngine versions.

Removes the older pointer-based versions of APIs taking EncodableValues for which there are now reference-based versions.

https://skia.googlesource.com/skia.git/+log/fb5e0ebef07c..0b6bf1c9668e

2020-09-10 skia-autoroll@skia-public.iam.gserviceaccount.com Roll dawn from 0a1061da0c7f to 87f25134a8c1 (7 revisions)
2020-09-10 bsalomon@google.com Revert "Temporary hack to force text texture index varying to be float."

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC reed@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/fuchsia-mac-sdk-flutter-engine
Please CC jsimmons@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

This disables the macOS Scenarios app tests until a fix for the current
flakiness is found.

This also reverts commit 55d447a1 where
one test was previously disabled. However, another started failing soon
after, so instead we disable the whole suite here.

This disables the macOS Scenarios app test
testFlutterViewControllerDetachingSendsApplicationLifecycle
until a fix for the flakiness is found.

Related issue: https://github.com/flutter/flutter/issues/61620

Fixes the following compilation errors:

../../flutter/shell/platform/linux/fl_value.cc:267:3: error: use of undeclared identifier 'memcpy'
  memcpy(self->values, data, sizeof(uint8_t) * data_length);
  ^
../../flutter/shell/platform/linux/fl_value.cc:284:3: error: use of undeclared identifier 'memcpy'
  memcpy(self->values, data, sizeof(int32_t) * data_length);
  ^
../../flutter/shell/platform/linux/fl_value.cc:294:3: error: use of undeclared identifier 'memcpy'
  memcpy(self->values, data, sizeof(int64_t) * data_length);
  ^
../../flutter/shell/platform/linux/fl_value.cc:304:3: error: use of undeclared identifier 'memcpy'
  memcpy(self->values, data, sizeof(double) * data_length);
  ^

../../flutter/shell/platform/linux/fl_string_codec.cc:29:28: error: use of undeclared identifier 'strlen'
  return g_bytes_new(text, strlen(text));
                           ^

../../flutter/shell/platform/linux/fl_standard_message_codec.cc:512:23: error: use of undeclared identifier 'strlen'
      size_t length = strlen(text);
                      ^
Signed-off-by: NDamian Wrobel <dwrobel@ertelnet.rybnik.pl>