Skip long-running tests on gc-stress.

TBR=machenbach@chromium.org

Bug: v8:7881
Change-Id: I1fe6a64e3d64532411bdcbb95cd4dd36cbe234e0
Reviewed-on: https://chromium-review.googlesource.com/1111699Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54010}

test/mjsunit/mjsunit.status

@@ -287,8 +287,6 @@
   # Slow tests.
   'array-constructor': [PASS, SLOW],
   'json': [PASS, SLOW],
-  'regress/regress-446389': [PASS, SLOW],
-  'regress/regress-inline-getter-near-stack-limit': [PASS, SLOW],
 
   # BUG(v8:4779): Crashes flakily with stress mode on arm64.
   'array-splice': [PASS, SLOW, ['arch == arm64', NO_VARIANTS]],
@@ -299,6 +297,15 @@
   # BUG(chromium:773631): Crashes flakily.
   'wasm/streaming-trap-location': [SKIP],
 
+  # BUG(v8:7880): Slow tests.
+  'regress/regress-707066': [SKIP],
+  'regress/regress-446389': [SKIP],
+  'regress/regress-458987': [SKIP],
+  'es6/regress/regress-crbug-465671': [SKIP],
+  'regress/regress-inline-getter-near-stack-limit': [SKIP],
+  'es6/regress/regress-crbug-465671-null': [SKIP],
+  'regress/regress-148378': [SKIP],
+  'regress/regress-crbug-762472': [SKIP],
 }],  # 'gc_stress == True'
 
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