Enable external_texture/* cts

Change-Id: Ieb153292c78ea8197b4309d796d352ce820646d1
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/99241
Commit-Queue: Shaobo Yan <shaobo.yan@intel.com>
Reviewed-by: Austin Eng <enga@chromium.org>
diff --git a/webgpu-cts/expectations.txt b/webgpu-cts/expectations.txt
index 2536b0c..13b3e28 100644
--- a/webgpu-cts/expectations.txt
+++ b/webgpu-cts/expectations.txt
@@ -213,7 +213,15 @@
 # external_texture failures
 # KEEP
 ################################################################################
-crbug.com/dawn/0000 webgpu:web_platform,external_texture,* [ Failure ]
+crbug.com/dawn/0000 [ linux ] webgpu:web_platform,external_texture,* [ Failure ]
+crbug.com/dawn/0000 [ mac intel ] webgpu:web_platform,external_texture,video:importExternalTexture,compute:sourceType="VideoElement";videoName="red-green.bt2020.vp9.webm" [ Failure ]
+crbug.com/dawn/0000 [ mac intel ] webgpu:web_platform,external_texture,video:importExternalTexture,compute:sourceType="VideoElement";videoName="red-green.bt601.vp9.webm" [ Failure ]
+crbug.com/dawn/0000 [ mac intel ] webgpu:web_platform,external_texture,video:importExternalTexture,compute:sourceType="VideoElement";videoName="red-green.bt709.vp9.webm" [ Failure ]
+crbug.com/dawn/0000 [ mac intel ] webgpu:web_platform,external_texture,video:importExternalTexture,compute:sourceType="VideoElement";videoName="red-green.theora.ogv" [ Failure ]
+crbug.com/dawn/0000 [ mac intel ] webgpu:web_platform,external_texture,video:importExternalTexture,compute:sourceType="VideoElement";videoName="red-green.webmvp8.webm" [ Failure ]
+crbug.com/dawn/0000 [ mac intel ] webgpu:web_platform,external_texture,video:importExternalTexture,sample:sourceType="VideoElement";videoName="red-green.bt601.vp9.webm" [ Failure ]
+crbug.com/dawn/0000 [ mac intel ] webgpu:web_platform,external_texture,video:importExternalTexture,sample:sourceType="VideoElement";videoName="red-green.theora.ogv" [ Failure ]
+crbug.com/dawn/0000 [ mac intel ] webgpu:web_platform,external_texture,video:importExternalTexture,sample:sourceType="VideoElement";videoName="red-green.webmvp8.webm" [ Failure ]
 
 ################################################################################
 # webgpu:api,operation,buffers failures