Bug 245840

In 254947@main ANGLE backend was activated by default, we have a lot of new passes but we have some new failures:

Failures:

fast/canvas/webgl/premultiplyalpha-test.html [ Failure ]
fast/canvas/webgl/tex-image-and-sub-image-2d-with-video-rgba4444.html [ Failure ]
webgl/1.0.3/conformance/textures/tex-image-and-sub-image-2d-with-video.html [ Timeout ]
webgl/max-active-contexts-webglcontextlost-prevent-default.html [ Timeout ]
webgl/1.0.3/conformance/context/premultiplyalpha-test.html [ Failure ]
webgl/1.0.3/conformance/more/functions/readPixelsBadArgs.html [ Failure ]
webgl/1.0.3/conformance/more/functions/texImage2DHTML.html [ Failure ]
webgl/1.0.3/conformance/more/functions/texSubImage2DHTML.html [ Failure ]
webgl/webgl2-primitive-restart.html [ ImageOnlyFailure ]
fast/canvas/webgl/webgl-composite-modes-repaint.html [ ImageOnlyFailure Failure ]
fast/canvas/webgl/webgl-composite-modes.html [ ImageOnlyFailure Failure ]

And we have some flaky tests:

webgl/1.0.3/conformance/extensions/oes-texture-float-with-video.html [ Pass Timeout ]
webgl/1.0.3/conformance/extensions/oes-texture-half-float-with-video.html [ Pass Timeout ]
webgl/pending/conformance/textures/misc/tex-image-video-repeated.html [ Pass Timeout ]
webgl/1.0.3/conformance/textures/tex-image-and-sub-image-2d-with-video-rgba4444.html [ Failure Timeout ]
webgl/1.0.3/conformance/textures/texture-upload-size.html [ Pass Failure ]
fast/canvas/webgl/texImage2D-video-flipY-false.html [ Timeout Failure ]
fast/canvas/webgl/texImage2D-video-flipY-true.html [ Timeout Failure ]
fast/canvas/webgl/texImage2DImageDataTest.html [ Pass Failure ]
fast/canvas/webgl/texture-active-bind.html [ Pass Failure ]
fast/canvas/webgl/texture-alternating-npot.html [ Pass Failure ]
fast/canvas/webgl/texture-bindings-uneffected-on-resize.html [ Pass Failure ]
fast/canvas/webgl/texture-color-profile.html [ Pass Failure ]
fast/canvas/webgl/texture-complete.html [ Pass Failure ]
fast/canvas/webgl/texture-npot.html [ Pass Failure ]
fast/canvas/webgl/texture-transparent-pixels-initialized.html [ Pass Failure ]
fast/canvas/webgl/toDataURL-unpremultipliedAlpha.html [ Pass Failure ]
fast/canvas/webgl/triangle.html [ Pass Failure ]
fast/canvas/webgl/type-conversion-test.html [ Pass Failure ]
fast/canvas/webgl/uniform-array-length-overflow.html [ Pass Failure ]
fast/canvas/webgl/uniform-location-length-limits.html [ Pass Failure ]
fast/canvas/webgl/uniform-location.html [ Pass Failure ]
fast/canvas/webgl/uniform-samplers-test.html [ Pass Failure ]
fast/canvas/webgl/uninitialized-locals.html [ Pass Failure ]
fast/canvas/webgl/viewport-unchanged-upon-resize.html [ Pass Failure ]
fast/canvas/webgl/webgl-compressed-texture-astc.html [ Pass Failure ]
fast/canvas/webgl/webgl-depth-texture.html [ Pass Failure ]
fast/canvas/webgl/webgl-texture-binding-preserved.html [ Pass Failure ]
fast/canvas/webgl/texImage2D-mse-flipY-false.html [ Timeout Failure ]
fast/canvas/webgl/webgl-clear-composited-notshowing.html [ Pass Failure ]