* Revert "Add flow test fixtures and tests (#13986)"
This reverts commit 620f5281b8.
* Revert "Dynamically determine whether to use offscreen surface based on need (#13976)"
This reverts commit a86ef94656.
At a quick glance, one could easily think of the "engine_time" as the
GPU thread time and the "frame_time" as the UI thread time because the
GPU thread time is mainly spent on the engine while the UI thread time
is mainly spent on the Dart framework to generate the frame.
But it's actually the other way. The "engine_time" is UI thread time and
the "frame_time" is the GPU thread time.
To avoid the confusion, rename them to "ui_time" and "raster_time"
respectively. I avoided the "gpu_time" because the rasterization may be
purely on a CPU backed software Skia backend.
This mechanically replaces kXXX_SkTextEncoding with SkTextEncoding::kXXX
and kXXX_SkFontHinting with SkFontHinting::kXXX. This will allow Skia to
remove these old macro constants and get everyone on the new enums.
This particular call doesn't do anything since the default is false
anyway. In addition Skia is looking to remove this flag since setting it
to true is now synonymous with setting the hinting to none.
This breaks the Linux build with:
```
[ RUN ] PerformanceOverlayLayer.Gold
../../flutter/flow/layers/performance_overlay_layer_unittests.cc:70: Failure
Value of: golden_data != nullptr
Actual: false
Expected: true
Golden file not found: "/b/s/w/ir/k/src/flutter/testing/resources"/performance_overlay_gold.png.
Please either set --golden-dir, or make sure that the unit test is run from the right directory (e.g., flutter/engine/src).
```
This reverts commit 3f0ce769e2.
Reverting this broke the flow tests for the performance overlay:
```
../../flutter/flow/layers/performance_overlay_layer_unittests.cc:70: Failure
Value of: golden_data != nullptr
Actual: false
Expected: true
```
This reverts commit 8427d73c83.
* Revert "Revert "Add mock capability to PerformanceOverlayLayer (#7537)" (#7765)"
This reverts commit 693645e464.
* Add command line args for golden dir and font file
The overlay surfaces are going to be the same IOSSurface implementation
with the platform views controller set to null (so these are surfaces
that don't support embedding platform views to them).
* Adds a FlutterOverlayView which is a UIView that's showing an
overlay surface.
* Creates an overlay surface for each embedded UIView (done in
FlutterPlatformViewsController).
* Changes CompositeEmbeddedView to return a new canvas.
* Makes the PlatformViewLayer replace the PaintContext's canvas with
the canvas for the overlay view.
* Changed canvas in PaintContext to be a pointer so it can be changed.
TBD in following PRs:
* Copy the current canvas state when replacing a canvas in PaintContext.
* Make FlutterOverlayView work with a GL backend (currently it only
works with software rendering)
David Worsham
liyuqian
Zachary Anderson
Dan Field
bungeman
Chris Bracken
reed-at-google
Jason Simmons
Amir Hardon
Michael Goderbauer
Chinmay Garde
Vyacheslav Egorov