Roll engine f8e7453f1106..4b7a552b9eae (24 commits) (#38663)

git@github.com:flutter/engine.git/compare/f8e7453f1106...4b7a552b9eae

git log f8e7453f1106..4b7a552b9eae --no-merges --oneline
2019-08-16 stuartmorgan@google.com Roll Dart back to e35e8833 (flutter/engine#11043)
2019-08-16 bkonyi@google.com Roll src/third_party/dart 306f8e04bb..fecc4c8f2d (4 commits)
2019-08-16 skia-flutter-autoroll@skia.org Roll src/third_party/skia 963a606677e1..6a519b8dd895 (6 commits) (flutter/engine#11042)
2019-08-15 liyuqian@google.com Hide verbose dart snapshot during run_test.py (flutter/engine#11040)
2019-08-15 chinmaygarde@google.com Remove ability to override mac_sdk_path in flutter/tools/gn (flutter/engine#11013)
2019-08-15 bkonyi@google.com Roll src/third_party/dart cd16fba718..306f8e04bb (10 commits)
2019-08-15 stuartmorgan@google.com Roll buildroot to pick up recent macOS changes (flutter/engine#11037)
2019-08-15 jason-simmons@users.noreply.github.com Remove the ParagraphImpl class from the text API (flutter/engine#11012)
2019-08-15 jason-simmons@users.noreply.github.com Disable a deprecation warning for use of a TaskDescription constructor for older platforms (flutter/engine#11029)
2019-08-15 matthew-carroll@users.noreply.github.com Re-lands platform brightness support on iOS, plus platform contrast (flutter/engine#10791)
2019-08-15 iska.kaushik@gmail.com [fuchsia] Add required trace so files for fuchsia fars (flutter/engine#11036)
2019-08-15 skia-flutter-autoroll@skia.org Roll src/third_party/skia e5dc1ebc864a..963a606677e1 (14 commits) (flutter/engine#11032)
2019-08-15 stuartmorgan@google.com Add _glfw versions of the GLFW desktop libraries (flutter/engine#11024)
2019-08-15 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from _fvZN... to 5Nhwb... (flutter/engine#11028)
2019-08-15 bkonyi@google.com Roll src/third_party/dart 9552646dc4..cd16fba718 (5 commits)
2019-08-15 dnfield@google.com Fix first frame logic (flutter/engine#11027)
2019-08-15 dnfield@google.com remove OS version (flutter/engine#11033)
2019-08-15 skia-flutter-autoroll@skia.org Roll src/third_party/skia e30a485a68c9..e5dc1ebc864a (7 commits) (flutter/engine#11025)
2019-08-15 bkonyi@google.com Roll src/third_party/dart cae08c6813..9552646dc4 (3 commits)
2019-08-15 jason-simmons@users.noreply.github.com Remove the output directory prefix from the Android engine JAR filename (flutter/engine#11015)
2019-08-15 inthroxify@users.noreply.github.com Fix flutter/flutter #34791 (flutter/engine#9977)
2019-08-15 bkonyi@google.com Roll src/third_party/dart e35e8833ee..cae08c6813 (28 commits)
2019-08-15 skia-flutter-autoroll@skia.org Roll src/third_party/skia f3f50099533d..e30a485a68c9 (2 commits) (flutter/engine#11022)
2019-08-15 skia-flutter-autoroll@skia.org Roll src/third_party/skia 319fd3d7bcb4..f3f50099533d (4 commits) (flutter/engine#11021)

The AutoRoll server is located here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff (stuartmorgan@google.com), and stop
the roller if necessary.

bin/internal/engine.version

-f8e7453f11067b5801a4484283592977d18be242
+4b7a552b9eaea71137265719e496343a9ada2628