Disable additional framebufferblit test

Adds an additional failure suppression for the WebGL2 conformance tests
on the ARM-based Mac DTKs
for deqp/functional/gles3/framebufferblit/default_framebuffer_00.html.

TBR=ynovikov@chromium.org

Bug: 1130118
Change-Id: I98e2856c47c5256388d6a061b4041c56436d8482
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2481953Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Commit-Queue: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#818190}

content/test/gpu/gpu_tests/test_expectations/webgl2_conformance_expectations.txt

@@ -752,6 +752,7 @@ crbug.com/1130117 [ mac apple-apple-a12z no-asan ] deqp/functional/gles3/multisa
 crbug.com/1130118 [ mac apple-apple-a12z ] conformance2/rendering/blitframebuffer-filter-srgb.html [ Failure ]
 crbug.com/1130118 [ mac apple-apple-a12z ] deqp/functional/gles3/framebufferblit/rect_03.html [ Failure ]
 crbug.com/1130118 [ mac apple-apple-a12z ] deqp/functional/gles3/framebufferblit/rect_04.html [ Failure ]
+crbug.com/1130118 [ mac apple-apple-a12z ] deqp/functional/gles3/framebufferblit/default_framebuffer_00.html [ Failure ]
 crbug.com/1130119 [ mac apple-apple-a12z ] conformance2/glsl3/vector-dynamic-indexing.html [ Failure ]
 crbug.com/1130119 [ mac apple-apple-a12z ] conformance2/textures/misc/tex-base-level-bug.html [ Failure ]
 crbug.com/1130119 [ mac apple-apple-a12z ] conformance2/rendering/framebuffer-completeness-unaffected.html [ Failure ]