gpu_tests.pixel_integration_test.PixelIntegrationTest.Pixel_DirectComposition_Video_VP9 failing on several Win7 FYI bots:

Win7 FYI x64 Release (NVIDIA)
https://ci.chromium.org/buildbot/chromium.gpu.fyi/Win7%20FYI%20x64%20Release%20%28NVIDIA%29/?limit=200

Win7 FYI Release (NVIDIA)
https://ci.chromium.org/buildbot/chromium.gpu.fyi/Win7%20FYI%20Release%20%28NVIDIA%29/?limit=200

Win7 FYI Release (AMD)
https://ci.chromium.org/buildbot/chromium.gpu.fyi/Win7%20FYI%20Release%20%28AMD%29/?limit=200

Win7 FYI x64 Debug (NVIDIA)
https://ci.chromium.org/buildbot/chromium.gpu.fyi/Win7%20FYI%20x64%20Debug%20%28NVIDIA%29/?limit=200

Win7 FYI Debug (NVIDIA)
https://ci.chromium.org/buildbot/chromium.gpu.fyi/Win7%20FYI%20Debug%20%28NVIDIA%29/?limit=200

Win7 FYI Debug (AMD)
https://ci.chromium.org/buildbot/chromium.gpu.fyi/Win7%20FYI%20Debug%20%28AMD%29/?limit=200

[15/46] gpu_tests.pixel_integration_test.PixelIntegrationTest.Pixel_DirectComposition_Video_VP9 failed unexpectedly 6.6130s:
  See http://chromium-browser-gpu-tests.commondatastorage.googleapis.com/view_test_results.html?74c0cb98e8b782212794bee0a565e7a4959c2e39_Win7_FYI_Release_AMD__telemetry for this run's test results
  Downloading gs://chromium-gpu-archive/reference-images/Pixel_DirectComposition_Video_VP9_v8_win_1002_6613_msaa.png to c:\b\swarm_slave\w\itxnhhcu\tmp_sr60t.png
  Uploading c:\b\swarm_slave\w\itxnhhcu\tmpmzrpoy.png to gs://chromium-browser-gpu-tests/runs/74c0cb98e8b782212794bee0a565e7a4959c2e39_Win7_FYI_Release_AMD__telemetry/gen/Pixel_DirectComposition_Video_VP9_74c0cb98e8b782212794bee0a565e7a4959c2e39.png (publicly readable)
  Uploading c:\b\swarm_slave\w\itxnhhcu\tmpzl5w_q.png to gs://chromium-browser-gpu-tests/runs/74c0cb98e8b782212794bee0a565e7a4959c2e39_Win7_FYI_Release_AMD__telemetry/ref/Pixel_DirectComposition_Video_VP9_74c0cb98e8b782212794bee0a565e7a4959c2e39.png (publicly readable)
  Uploading c:\b\swarm_slave\w\itxnhhcu\tmpip_krr.png to gs://chromium-browser-gpu-tests/runs/74c0cb98e8b782212794bee0a565e7a4959c2e39_Win7_FYI_Release_AMD__telemetry/diff/Pixel_DirectComposition_Video_VP9_74c0cb98e8b782212794bee0a565e7a4959c2e39.png (publicly readable)
  
  Traceback (most recent call last):
    _RunGpuTest at content\test\gpu\gpu_tests\gpu_integration_test.py:132
      self.RunActualGpuTest(url, *args)
    RunActualGpuTest at content\test\gpu\gpu_tests\pixel_integration_test.py:183
      self.fail('Reference image did not match captured screen')
    fail at .swarming_module\bin\Lib\unittest\case.py:410
      raise self.failureException(msg)
  AssertionError: Reference image did not match captured screen
  
  Locals:
    msg : 'Reference image did not match captured screen'
  
  Found crashpad_database_util
  No minidump found via crashpad_database_util
  No minidump paths to symbolize
  Found crashpad_database_util
  No minidump found via crashpad_database_util
  Restarting browser due to unexpected test failure
  Closing browser (pid=4060) ...
  Successfully shut down browser cooperatively
  Browser is closed.
  Starting Chrome ['c:\\b\\swarm_slave\\w\\ir\\out\\Release\\chrome.exe', '--enable-direct-composition-layers', '--force-color-profile=srgb', '--test-type=gpu', '--enable-gpu-benchmarking', '--js-flags=--expose-gc', '--enable-logging=stderr', '--ensure-forced-color-profile', '--enable-net-benchmarking', '--metrics-recording-only', '--no-default-browser-check', '--no-first-run', '--enable-gpu-benchmarking', '--deny-permission-prompts', '--autoplay-policy=no-user-gesture-required', '--disable-background-networking', '--disable-component-extensions-with-background-pages', '--disable-default-apps', '--disable-search-geolocation-disclosure', '--proxy-server=socks://localhost:49412', '--ignore-certificate-errors-spki-list=PhrPvGIaAMmd29hj8BCZOq096yj7uMpRNHpn5PDxI6I=', '--remote-debugging-port=0', '--enable-crash-reporter-for-testing', '--disable-component-update', '--window-size=1280,1024', '--user-data-dir=c:\\b\\swarm_slave\\w\\itxnhhcu\\tmpfgbnem', 'about:blank']
  DoNothingForwarder started between 127.0.0.1:49882 and 49882
  Got devtools config: ws://127.0.0.1:49882/devtools/browser/04601f5d-a8a8-4cdf-9420-789c3a2ba50a
  Browser started (pid=184).
  OS: win win7
  Detailed OS version: 6.1.7601
  Browser command line: "c:\b\swarm_slave\w\ir\out\Release\chrome.exe" --enable-direct-composition-layers --force-color-profile=srgb --test-type=gpu --enable-gpu-benchmarking --js-flags=--expose-gc --enable-logging=stderr --ensure-forced-color-profile --enable-net-benchmarking --metrics-recording-only --no-default-browser-check --no-first-run --enable-gpu-benchmarking --deny-permission-prompts --autoplay-policy=no-user-gesture-required --disable-background-networking --disable-component-extensions-with-background-pages --disable-default-apps --disable-search-geolocation-disclosure --proxy-server=socks://localhost:49412 --ignore-certificate-errors-spki-list=PhrPvGIaAMmd29hj8BCZOq096yj7uMpRNHpn5PDxI6I= --remote-debugging-port=0 --enable-crash-reporter-for-testing --disable-component-update --window-size=1280,1024 --user-data-dir="c:\b\swarm_slave\w\itxnhhcu\tmpfgbnem" --flag-switches-begin --flag-switches-end about:blank
  GPU device 0: VENDOR = 0x1002 (ATI), DEVICE = 0x6613
  GPU device 1: VENDOR = 0x102b, DEVICE = 0x534
  GPU Attributes:
    amd_switchable      : False
    can_support_threaded_texture_mailbox: False
    direct_composition  : False
    direct_rendering    : True
    driver_date         : 3-16-2018
    driver_vendor       : Advanced Micro Devices, Inc.
    driver_version      : 23.20.15033.1003
    encrypted_only      : False
    gl_extensions       : GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object 
    gl_renderer         : ANGLE (AMD Radeon R7 200 Series Direct3D11 vs_5_0 ps_5_0)
    gl_reset_notification_strategy: 33362
    gl_vendor           : Google Inc.
    gl_version          : OpenGL ES 2.0 (ANGLE 2.1.0.6807f8265988)
    gl_ws_extensions    : EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled 
    gl_ws_vendor        : Google Inc. (adapter LUID: 0000000000007e96)
    gl_ws_version       : 1.4 (ANGLE 2.1.0.6807f8265988)
    in_process_gpu      : False
    initialization_time : 0.029628
    jpeg_decode_accelerator_supported: False
    max_msaa_samples    : 8
    max_resolution_height: 1088
    max_resolution_width: 1920
    min_resolution_height: 48
    min_resolution_width: 48
    optimus             : False
    passthrough_cmd_decoder: True
    pixel_shader_version: 5.0
    process_crash_count : 0
    profile             : 3
    sandboxed           : True
    software_rendering  : False
    supports_overlays   : False
    vertex_shader_version: 5.0
    video_decode_accelerator_flags: 0
  Feature Status:
    2d_canvas           : enabled
    checker_imaging     : enabled_on
    flash_3d            : enabled
    flash_stage3d       : enabled
    flash_stage3d_baseline: enabled
    gpu_compositing     : enabled
    multiple_raster_threads: enabled_on
    native_gpu_memory_buffers: disabled_software
    rasterization       : enabled
    surface_synchronization: enabled_on
    video_decode        : enabled
    viz_display_compositor: disabled_off
    webgl               : enabled
    webgl2              : enabled
  Driver Bug Workarounds:
    clear_uniforms_before_first_program_use
    decode_encode_srgb_for_generatemipmap
    disable_accelerated_vpx_decode
    disable_direct_composition
    disable_discard_framebuffer
    disable_dxgi_zero_copy_video
    disable_framebuffer_cmaa
    exit_on_context_lost
    force_cube_complete
    scalarize_vec_and_mat_constructor_args
    texsubimage_faster_than_teximage
  Traceback (most recent call last):
    File "c:\b\swarm_slave\w\ir\third_party\catapult\telemetry\telemetry\testing\serially_executed_browser_test_case.py", line 206, in <lambda>
      return lambda self: based_method(self, *args)
    File "c:\b\swarm_slave\w\ir\content\test\gpu\gpu_tests\gpu_integration_test.py", line 132, in _RunGpuTest
      self.RunActualGpuTest(url, *args)
    File "c:\b\swarm_slave\w\ir\content\test\gpu\gpu_tests\pixel_integration_test.py", line 183, in RunActualGpuTest
      self.fail('Reference image did not match captured screen')
  AssertionError: Reference image did not match captured screen
Restarting browser with arguments: ['--force-color-profile=srgb', '--ensure-forced-color-profile', '--enable-gpu-benchmarking', '--test-type=gpu', '--force-gpu-rasterization']
Closing browser (pid=184) ...
[2552:2896:0405/145625.675:ERROR:gles2_cmd_decoder_passthrough_doers.cc(4126)] NOT IMPLEMENTED
[184:3444:0405/145626.752:WARNING:discardable_shared_memory_manager.cc(436)] Some MojoDiscardableSharedMemoryManagerImpls are still alive. They will be leaked.
[184:556:0405/145626.847:WARNING:url_request_context_getter.cc(43)] URLRequestContextGetter leaking due to no owning thread.
[184:556:0405/145626.848:WARNING:pref_notifier_impl.cc(23)] Pref observer found at shutdown.
Successfully shut down browser cooperatively
Browser is closed.
Chrome build location for win_AMD64 not found. Browser will be run without Flash.
Chose browser: PossibleDesktopBrowser(type=release, executable=c:\b\swarm_slave\w\ir\out\Release\chrome.exe, flash=None)
Starting Chrome ['c:\\b\\swarm_slave\\w\\ir\\out\\Release\\chrome.exe', '--force-color-profile=srgb', '--test-type=gpu', '--force-gpu-rasterization', '--enable-gpu-benchmarking', '--js-flags=--expose-gc', '--enable-logging=stderr', '--ensure-forced-color-profile', '--enable-net-benchmarking', '--metrics-recording-only', '--no-default-browser-check', '--no-first-run', '--enable-gpu-benchmarking', '--deny-permission-prompts', '--autoplay-policy=no-user-gesture-required', '--disable-background-networking', '--disable-component-extensions-with-background-pages', '--disable-default-apps', '--disable-search-geolocation-disclosure', '--proxy-server=socks://localhost:49412', '--ignore-certificate-errors-spki-list=PhrPvGIaAMmd29hj8BCZOq096yj7uMpRNHpn5PDxI6I=', '--remote-debugging-port=0', '--enable-crash-reporter-for-testing', '--disable-component-update', '--window-size=1280,1024', '--user-data-dir=c:\\b\\swarm_slave\\w\\itxnhhcu\\tmpixj2ov', 'about:blank']
[1876:884:0405/145627.041:ERROR:memory_mapped_file.cc(53)] Couldn't open c:\b\swarm_slave\w\ir\out\Release\chrome_200_percent.pak
[1876:884:0405/145627.041:ERROR:data_pack.cc(251)] Failed to mmap datapack

DevTools listening on ws://127.0.0.1:49890/devtools/browser/7f0b4007-cea0-4408-9950-035cdb8ac9e2
DoNothingForwarder started between 127.0.0.1:49890 and 49890
Got devtools config: ws://127.0.0.1:49890/devtools/browser/7f0b4007-cea0-4408-9950-035cdb8ac9e2
Browser started (pid=1876).
OS: win win7
Detailed OS version: 6.1.7601
[3420:1756:0405/145627.131:INFO:media_foundation_video_encode_accelerator_win.cc(370)] Windows versions earlier than 8 are not supported.
[0405/145627.136:ERROR:memory_mapped_file.cc(53)] Couldn't open c:\b\swarm_slave\w\ir\out\Release\chrome_200_percent.pak
[0405/145627.136:ERROR:data_pack.cc(251)] Failed to mmap datapack
Browser command line: "c:\b\swarm_slave\w\ir\out\Release\chrome.exe" --force-color-profile=srgb --test-type=gpu --force-gpu-rasterization --enable-gpu-benchmarking --js-flags=--expose-gc --enable-logging=stderr --ensure-forced-color-profile --enable-net-benchmarking --metrics-recording-only --no-default-browser-check --no-first-run --enable-gpu-benchmarking --deny-permission-prompts --autoplay-policy=no-user-gesture-required --disable-background-networking --disable-component-extensions-with-background-pages --disable-default-apps --disable-search-geolocation-disclosure --proxy-server=socks://localhost:49412 --ignore-certificate-errors-spki-list=PhrPvGIaAMmd29hj8BCZOq096yj7uMpRNHpn5PDxI6I= --remote-debugging-port=0 --enable-crash-reporter-for-testing --disable-component-update --window-size=1280,1024 --user-data-dir="c:\b\swarm_slave\w\itxnhhcu\tmpixj2ov" --flag-switches-begin --flag-switches-end about:blank
GPU device 0: VENDOR = 0x1002 (ATI), DEVICE = 0x6613
GPU device 1: VENDOR = 0x102b, DEVICE = 0x534
GPU Attributes:
  amd_switchable      : False
  can_support_threaded_texture_mailbox: False
  direct_composition  : False
  direct_rendering    : True
  driver_date         : 3-16-2018
  driver_vendor       : Advanced Micro Devices, Inc.
  driver_version      : 23.20.15033.1003
  encrypted_only      : False
  gl_extensions       : GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object 
  gl_renderer         : ANGLE (AMD Radeon R7 200 Series Direct3D11 vs_5_0 ps_5_0)
  gl_reset_notification_strategy: 33362
  gl_vendor           : Google Inc.
  gl_version          : OpenGL ES 2.0 (ANGLE 2.1.0.6807f8265988)
  gl_ws_extensions    : EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled 
  gl_ws_vendor        : Google Inc. (adapter LUID: 0000000000007e96)
  gl_ws_version       : 1.4 (ANGLE 2.1.0.6807f8265988)
  in_process_gpu      : False
  initialization_time : 0.031544
  jpeg_decode_accelerator_supported: False
  max_msaa_samples    : 8
  max_resolution_height: 1088
  max_resolution_width: 1920
  min_resolution_height: 48
  min_resolution_width: 48
  optimus             : False
  passthrough_cmd_decoder: True
  pixel_shader_version: 5.0
  process_crash_count : 0
  profile             : 3
  sandboxed           : True
  software_rendering  : False
  supports_overlays   : False
  vertex_shader_version: 5.0
  video_decode_accelerator_flags: 0
Feature Status:
  2d_canvas           : enabled
  checker_imaging     : enabled_on
  flash_3d            : enabled
  flash_stage3d       : enabled
  flash_stage3d_baseline: enabled
  gpu_compositing     : enabled
  multiple_raster_threads: enabled_on
  native_gpu_memory_buffers: disabled_software
  rasterization       : enabled_force
  surface_synchronization: enabled_on
  video_decode        : enabled
  viz_display_compositor: disabled_off
  webgl               : enabled
  webgl2              : enabled
Driver Bug Workarounds:
  clear_uniforms_before_first_program_use
  decode_encode_srgb_for_generatemipmap
  disable_accelerated_vpx_decode
  disable_direct_composition
  disable_discard_framebuffer
  disable_dxgi_zero_copy_video
  disable_framebuffer_cmaa
  exit_on_context_lost
  force_cube_complete
  scalarize_vec_and_mat_constructor_args
  texsubimage_faster_than_teximage

suspecting https://chromium-review.googlesource.com/c/chromium/src/+/869147

hubbe@, could you please take a look and see if it's related? Thanks!