unified-heap: Adjust test expectations

No-try: true
Tbr: haraken@chromium.org
Bug: 843903
Change-Id: I9a130a70247807c593f94eff112d37d043055db2
Reviewed-on: https://chromium-review.googlesource.com/c/1340278Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609109}

third_party/WebKit/LayoutTests/flag-specific/enable-blink-features=HeapUnifiedGarbageCollection/fast/xpath/xpath-iterator-result-should-mark-its-nodeset-expected.txt

 Test for bug 34231: Nodes in XPathResult should keep JS wrappers alive.
 For this test to PASS you should see 2 PASS below.
 
+
 PASS
 PASS
 

third_party/WebKit/LayoutTests/flag-specific/enable-blink-features=HeapUnifiedGarbageCollection/fast/xpath/xpath-other-nodeset-result-should-mark-its-nodeset-expected.txt

 Test for bug 34231: Nodes in XPath result snapshots should keep JS wrappers alive.
 For this test to PASS you should see 2 PASS below.
 
+
 PASS
 PASS
 

third_party/WebKit/LayoutTests/flag-specific/enable-blink-features=HeapUnifiedGarbageCollection/fast/xpath/xpath-snapshot-result-should-mark-its-nodeset-expected.txt

 Test for bug 34231: Nodes in XPath result snapshots should keep JS wrappers alive.
 For this test to PASS you should see 2 PASS below.
 
+
 PASS
 PASS