Move CkCanvas to new JS-interop

[yjbanov]

Description

Move CkCanvas to the new JS-interop.

Benchmark results:

Score	Average A (noise)	Average B (noise)	Speed-up
bench_card_infinite_scroll.canvaskit.drawFrameDuration.average	2982.46 (9.98%)	2409.46 (5.28%)	1.24x	
bench_card_infinite_scroll.canvaskit.totalUiFrame.average	3821.00 (4.62%)	3052.67 (11.97%)	1.25x	
bench_card_infinite_scroll_backward.canvaskit.drawFrameDuration.average	2742.83 (6.26%)	1837.10 (12.32%)	1.49x	
bench_card_infinite_scroll_backward.canvaskit.totalUiFrame.average	3911.00 (4.59%)	2687.67 (8.14%)	1.46x	
clipped_out_pictures.canvaskit.drawFrameDuration.average	3540.29 (5.01%)	2055.62 (2.03%)	1.72x	
clipped_out_pictures.canvaskit.totalUiFrame.average	4538.67 (4.90%)	2665.67 (13.63%)	1.70x	
draw_rect.canvaskit.drawFrameDuration.average	5632.81 (7.03%)	3929.68 (2.81%)	1.43x	
draw_rect.canvaskit.totalUiFrame.average	6629.33 (14.16%)	4689.00 (7.90%)	1.41x	
draw_rect_variable_paint.canvaskit.drawFrameDuration.average	13498.28 (3.56%)	9841.54 (7.90%)	1.37x	
draw_rect_variable_paint.canvaskit.totalUiFrame.average	14530.33 (1.30%)	11068.33 (13.78%)	1.31x	
bench_path_recording.canvaskit.recordPathConstruction.average	20799.10 (0.52%)	20904.79 (1.45%)	0.99x	
text_out_of_picture_bounds.canvaskit.drawFrameDuration.average	4566.99 (8.28%)	4624.09 (2.23%)	0.99x	
text_out_of_picture_bounds.canvaskit.totalUiFrame.average	5399.00 (9.07%)	5133.67 (1.06%)	1.05x	
bench_simple_lazy_text_scroll.canvaskit.drawFrameDuration.average	4944.68 (1.94%)	3680.19 (2.89%)	1.34x	
bench_simple_lazy_text_scroll.canvaskit.totalUiFrame.average	5704.00 (5.44%)	4146.00 (2.30%)	1.38x	
build_material_checkbox.canvaskit.drawFrameDuration.average	11026.33 (0.93%)	8901.66 (1.78%)	1.24x	
build_material_checkbox.canvaskit.totalUiFrame.average	11309.33 (1.34%)	9215.67 (2.11%)	1.23x	
dynamic_clip_on_static_picture.canvaskit.drawFrameDuration.average	1590.39 (5.86%)	1495.84 (0.57%)	1.06x	
dynamic_clip_on_static_picture.canvaskit.totalUiFrame.average	1863.33 (3.38%)	1837.67 (2.81%)	1.01x	
bench_picture_recording.canvaskit.recordPaintCommands.average	17117.50 (6.36%)	8514.61 (1.73%)	2.01x	
bench_picture_recording.canvaskit.estimatePaintBounds.average	65.21 (1.43%)	86.61 (1.44%)	0.75x	
bench_update_many_child_layers.canvaskit.drawFrameDuration.average	8070.84 (8.64%)	5682.77 (4.13%)	1.42x	
bench_update_many_child_layers.canvaskit.totalUiFrame.average	9179.33 (7.94%)	7313.67 (5.78%)	1.26x	
bench_mouse_region_grid_scroll.canvaskit.drawFrameDuration.average	6388.93 (9.30%)	6510.27 (1.23%)	0.98x	
bench_mouse_region_grid_scroll.canvaskit.totalUiFrame.average	8182.00 (4.29%)	7826.00 (4.79%)	1.05x	
bench_mouse_region_grid_hover.canvaskit.drawFrameDuration.average	5834.26 (5.87%)	5646.79 (1.71%)	1.03x	
bench_mouse_region_grid_hover.canvaskit.hitTestDuration.average	260.55 (4.96%)	279.12 (4.60%)	0.93x	
bench_mouse_region_grid_hover.canvaskit.totalUiFrame.average	7519.00 (4.06%)	7773.33 (12.05%)	0.97x	
text_canvas_kit_color_grid.canvaskit.drawFrameDuration.average	22538.38 (0.08%)	20249.01 (1.73%)	1.11x	

Results from the devicelab:

Tests

I added the following tests:

• More tests in canvaskit_api_test.dart.

[harryterkelsen]

LGTM

[harryterkelsen]

I really like the solution of parameterizing SkiaObject