[foozzie] Suppress optimization status for correctness fuzzing

TBR=yangguo@chromium.org
NOTRY=true

Bug: chromium:813833
Change-Id: If9694bebc6576549feb00cbf035c4a5e92a70976
Reviewed-on: https://chromium-review.googlesource.com/936442Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51542}

tools/clusterfuzz/v8_foozzie_harness_adjust.js

@@ -81,5 +81,20 @@ try {
     this.assertNotNull = function assertNotNull(value, name_opt) {
       print(prettyPrinted(value));
     }
+
+    // Suppress optimization status as it leads to false positives.
+    this.assertUnoptimized = function assertUnoptimized() {}
+
+    this.assertOptimized = function assertOptimized() {}
+
+    this.isNeverOptimize = function isNeverOptimize() {}
+
+    this.isAlwaysOptimize = function isAlwaysOptimize() {}
+
+    this.isInterpreted = function isInterpreted() {}
+
+    this.isOptimized = function isOptimized() {}
+
+    this.isTurboFanned = function isTurboFanned() {}
   })();
 } catch(e) { }