[foozzie] Disable async compilation of WebAssembly

Async compilation introduces nondeterminism, thus disable it for
foozzie.

R=ahaas@chromium.org, machenbach@chromium.org

Bug: v8:8949, chromium:942941
Change-Id: Ieeb92c530de299cdd34f0d9cc3a1293b2dc5e139
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1526194Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60287}

tools/clusterfuzz/testdata/failure_output.txt

@@ -9,9 +9,9 @@
 # Compared x64,ignition with x64,ignition_turbo
 #
 # Flags of x64,ignition:
---abort_on_stack_or_string_length_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit --es-staging --wasm-num-compilation-tasks=0 --suppress-asm-messages --random-seed 12345 --turbo-filter=~ --noopt --liftoff --no-wasm-tier-up
+--abort_on_stack_or_string_length_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit --es-staging --no-wasm-async-compilation --suppress-asm-messages --random-seed 12345 --turbo-filter=~ --noopt --liftoff --no-wasm-tier-up
 # Flags of x64,ignition_turbo:
---abort_on_stack_or_string_length_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit --es-staging --wasm-num-compilation-tasks=0 --suppress-asm-messages --random-seed 12345 --stress-scavenge=100
+--abort_on_stack_or_string_length_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit --es-staging --no-wasm-async-compilation --suppress-asm-messages --random-seed 12345 --stress-scavenge=100
 #
 # Difference:
 - unknown

tools/clusterfuzz/testdata/sanity_check_output.txt

@@ -9,9 +9,9 @@
 # Compared x64,ignition with x64,ignition_turbo
 #
 # Flags of x64,ignition:
---abort_on_stack_or_string_length_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit --es-staging --wasm-num-compilation-tasks=0 --suppress-asm-messages --random-seed 12345 --turbo-filter=~ --noopt --liftoff --no-wasm-tier-up
+--abort_on_stack_or_string_length_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit --es-staging --no-wasm-async-compilation --suppress-asm-messages --random-seed 12345 --turbo-filter=~ --noopt --liftoff --no-wasm-tier-up
 # Flags of x64,ignition_turbo:
---abort_on_stack_or_string_length_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit --es-staging --wasm-num-compilation-tasks=0 --suppress-asm-messages --random-seed 12345 --stress-scavenge=100
+--abort_on_stack_or_string_length_overflow --expose-gc --allow-natives-syntax --invoke-weak-callbacks --omit-quit --es-staging --no-wasm-async-compilation --suppress-asm-messages --random-seed 12345 --stress-scavenge=100
 #
 # Difference:
 - unknown

tools/clusterfuzz/v8_foozzie.py

@@ -105,7 +105,7 @@ SANITY_CHECKS = os.path.join(BASE_PATH, 'v8_sanity_checks.js')
 
 FLAGS = ['--abort_on_stack_or_string_length_overflow', '--expose-gc',
          '--allow-natives-syntax', '--invoke-weak-callbacks', '--omit-quit',
-         '--es-staging', '--wasm-num-compilation-tasks=0',
+         '--es-staging', '--no-wasm-async-compilation',
          '--suppress-asm-messages']
 
 SUPPORTED_ARCHS = ['ia32', 'x64', 'arm', 'arm64']