Started here:
https://build.chromium.org/p/chromium.gpu.fyi/builders/Linux%20Release%20%28AMD%20R7%20240%29/builds/1940

Failing tests:
WebglConformance_conformance2_textures_canvas_sub_rectangle_tex_2d_rg8ui_rg_integer_unsigned_byte
WebglConformance_conformance2_textures_canvas_sub_rectangle_tex_2d_rgb8ui_rgb_integer_unsigned_byte
WebglConformance_conformance2_textures_canvas_sub_rectangle_tex_2d_rgba8ui_rgba_integer_unsigned_byte
WebglConformance_conformance2_textures_canvas_sub_rectangle_tex_2d_srgb8_alpha8_rgba_unsigned_byte
WebglConformance_conformance2_textures_canvas_sub_rectangle_tex_2d_srgb8_rgb_unsigned_byte
WebglConformance_conformance2_textures_canvas_tex_2d_rg8ui_rg_integer_unsigned_byte
WebglConformance_conformance2_textures_canvas_tex_2d_rgb8ui_rgb_integer_unsigned_byte
WebglConformance_conformance2_textures_canvas_tex_2d_rgba8ui_rgba_integer_unsigned_byte
WebglConformance_conformance2_textures_canvas_tex_2d_srgb8_alpha8_rgba_unsigned_byte
WebglConformance_conformance2_textures_canvas_tex_2d_srgb8_rgb_unsigned_byte
WebglConformance_conformance2_textures_image_bitmap_from_canvas_tex_2d_rg8ui_rg_integer_unsigned_byte
WebglConformance_conformance2_textures_image_bitmap_from_canvas_tex_2d_rgb8ui_rgb_integer_unsigned_byte
WebglConformance_conformance2_textures_image_bitmap_from_canvas_tex_2d_rgba8ui_rgba_integer_unsigned_byte
WebglConformance_conformance2_textures_image_bitmap_from_canvas_tex_2d_srgb8_alpha8_rgba_unsigned_byte
WebglConformance_conformance2_textures_image_bitmap_from_canvas_tex_2d_srgb8_rgb_unsigned_byte
WebglConformance_conformance2_textures_webgl_canvas_tex_2d_rg8ui_rg_integer_unsigned_byte
WebglConformance_conformance2_textures_webgl_canvas_tex_2d_rgb8ui_rgb_integer_unsigned_byte
WebglConformance_conformance2_textures_webgl_canvas_tex_2d_rgba8ui_rgba_integer_unsigned_byte
WebglConformance_conformance2_textures_webgl_canvas_tex_2d_srgb8_alpha8_rgba_unsigned_byte
WebglConformance_conformance2_textures_webgl_canvas_tex_2d_srgb8_rgb_unsigned_byte

Lot of errors like:
getError expected: NO_ERROR. Was INVALID_OPERATION : after evaluating: gl.pixelStorei(gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, gl.NONE);
FAIL getError expected: NO_ERROR. Was INVALID_OPERATION : after evaluating: gl.pixelStorei(gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, gl.NONE);
GL ERROR :GL_INVALID_OPERATION : glTexImage2D: <- error from previous GL command

Sometimes:
getError expected: NO_ERROR. Was OUT_OF_MEMORY : after evaluating: gl.pixelStorei(gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, gl.NONE);
FAIL getError expected: NO_ERROR. Was OUT_OF_MEMORY : after evaluating: gl.pixelStorei(gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, gl.NONE);
GL ERROR :GL_OUT_OF_MEMORY : glTexImage2D: <- error from previous GL command

Qiankun, could you please check if https://codereview.chromium.org/2738163002 may be responsible?