Update bug IDs of failing WebGL tests with SwANGLE.

NOTRY=true
TBR=kbr@chromium.org

BUG=angleproject:4684,angleproject:3930

Change-Id: I6582e6c495626e586d6eeb2ad2912e50320933e1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2230762Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#775107}

content/test/gpu/gpu_tests/test_expectations/webgl_conformance_expectations.txt

@@ -141,9 +141,9 @@ crbug.com/772037 [ win7 release amd d3d11 passthrough ] conformance/extensions/o
 # crbug.com/737016 [ win nvidia d3d11 passthrough ] conformance/programs/program-test.html [ RetryOnFailure ]
 
 # Vulkan / Passthrough command decoder
-crbug.com/angleproject/2722 [ vulkan passthrough ] conformance/textures/misc/copy-tex-image-and-sub-image-2d.html [ Failure ]
+crbug.com/angleproject/3930 [ vulkan passthrough ] conformance/textures/misc/copy-tex-image-and-sub-image-2d.html [ Failure ]
 crbug.com/angleproject/2914 [ vulkan passthrough ] conformance/textures/misc/texture-copying-feedback-loops.html [ Failure ]
-crbug.com/angleproject/2722 [ vulkan passthrough ] conformance/textures/misc/texture-mips.html [ Failure ]
+crbug.com/angleproject/4684 [ vulkan passthrough ] conformance/textures/misc/texture-mips.html [ Failure ]
 crbug.com/1063472 [ intel vulkan passthrough ] conformance/extensions/webgl-compressed-texture-astc.html [ Failure ]
 crbug.com/1063472 [ intel vulkan passthrough ] conformance/extensions/webgl-compressed-texture-s3tc-srgb.html [ Failure ]
 crbug.com/1063472 [ intel vulkan passthrough ] conformance/extensions/webgl-compressed-texture-s3tc.html [ Failure ]