This reverts commit ada6b7e5.

For the ease of code reviews, this only includes minimal code from
MetricPoint, GoogleBenchmarksParser, and their unit tests.

See go/flutter-metrics-center-migration for the overall plan.

* Added Interactive Sample

* Improve backbuttondispatcher

* update

* update

* fix analyzer

* addressing comments

* make takeprioirty recursive by default

* fix comment

* addressing comment

This reverts commit 36ff0b2d.

* indicatorPadding now does not get ignored

* Removing unnecessary comments

* Throw FlutterError on indicatorPadding

* Tests for indicatorPadding

* Migrate test to NNBD

* Tests Renamed

If no source files were changed by a hot reload, do not send the reload sources RPC. This slightly speeds up the no-op reloads and gives users a faster way to force a re-render.

Temporarily disable web expression evaluation tests,
until we figure out how to disable the only on non-web bot.

* c597333e8 Roll Skia from f548a028ce70 to c21902c0d3cc (46 revisions) (flutter/engine#22224)

* 37d766c0d Fix includes to start with shell (flutter/engine#22227)

* 1ad676529 [web] Fixes canvas pixelation and overallocation due to transforms.  (flutter/engine#22160)

* 9f9fc1fa2 Roll Skia from c21902c0d3cc to 9615bcf71f2a (1 revision) (flutter/engine#22226)

* 0faa72e4a Roll Dart SDK from fed66f60a3bc to 25ef5dc559cf (1 revision) (flutter/engine#22225)

* 172a3930f Report image diff status for iOS scenario golden tests (flutter/engine#22230)

* fddabca7b updating integration tests version. (flutter/engine#22235)

* a36bcdc69 Roll Fuchsia Mac SDK from mhak7e_o6... to 8SkbMXJJ9... (flutter/engine#22231)

* 6a331d3be Roll Skia from 9615bcf71f2a to d5e6368fffd0 (8 revisions) (flutter/engine#22234)

* 9b34207a1 Fixing semantics borders on mobile web (flutter/engine#21856)

* 4e9459e00 Refactored the FlutterEngine to make it easier to implement spawn functionality (flutter/engine#21890)

* fa77e6871 disable AppLifecycleTests (flutter/engine#22236)

* 153775bc5 update golden (flutter/engine#22247)

* 50dbe8554 [web] fix hot restart type error (flutter/engine#22248)

* c8cf09aa4 Roll Skia from d5e6368fffd0 to 7585a65ac709 (7 revisions) (flutter/engine#22237)

* 68e2e4695 Roll Fuchsia Mac SDK from 8SkbMXJJ9... to Pz4ZHZrUp... (flutter/engine#22246)

* d3182bc22 Roll Dart SDK from 25ef5dc559cf to 5acb5fcf84cb (4 revisions) (flutter/engine#22243)

* 9b4bb20ac makes android semanticsnode to ignore hittest if it is not focusable (flutter/engine#22205)

* 3c7a54e9d Roll Fuchsia Linux SDK from sNx8qabBn... to QqGvMWaYk... (flutter/engine#22244)

* eea98b2b6 Roll Skia from 7585a65ac709 to dffd20efe95c (14 revisions) (flutter/engine#22250)

* 46e3bba99 Defer Windows arrow key and delete handling (flutter/engine#22207)

* 14437d6c0 fix _getArrayBuffer signature (flutter/engine#22251)

* 8defec6e8 Fix nullability issue with Image.network (flutter/engine#22252)

* 67d55ed42 Roll Dart SDK from 5acb5fcf84cb to a9d583383410 (4 revisions) (flutter/engine#22255)

* 7c8f57c07 Report error when instantiating CanvasKit network image (flutter/engine#22159)

* 9945db3d5 Remove the metrics task from cirrus. (flutter/engine#22240)

* bd1918111 Add braces on if statements to match linter style (flutter/engine#22130)

* e9c62e749 do not print in _computePixelDensity (flutter/engine#22257)

* 261710199 Roll Dart SDK from a9d583383410 to d2577410a501 (1 revision) (flutter/engine#22258)

* 3d194fa54 Switch macOS embedding to proc table embedder API (flutter/engine#21811)

* 31b6f0b31 Roll Fuchsia Mac SDK from Pz4ZHZrUp... to 6yEx5GNGG... (flutter/engine#22262)

* 78a018174 Roll Fuchsia Linux SDK from QqGvMWaYk... to oLF1FW-gC... (flutter/engine#22264)

* ccdb6819c WeakPersistentHandle migration (flutter/engine#19843)

* ce0a30c4d Roll Dart SDK from 52783837369d to b43baaaa477d (723 revisions) (flutter/engine#22265)

* 59b01e0e5 [web] Fix repaint logic for cullrect,transform changes (flutter/engine#22273)

Due to #69707 the SkSL tests need the process killing logic still.

This reverts commit 406ca0bc.

[flutter_tools] support --extra-gen-snapshot-options everywhere --extra-front-end-options is specified (#69592)

support --extra-gen-snapshot-options everywhere --extra-front-end-options is specified