Mark heap-snapshot-with-detached-dom-tree.html as flaky.

[email protected]
BUG=312925

Review URL: https://codereview.chromium.org/51323002

git-svn-id: svn://svn.chromium.org/blink/trunk@160858 bbb929c8-8fbe-4397-9dbb-9b2b20218538
diff --git a/third_party/WebKit/LayoutTests/TestExpectations b/third_party/WebKit/LayoutTests/TestExpectations
index f3b0f6f..4083a80 100644
--- a/third_party/WebKit/LayoutTests/TestExpectations
+++ b/third_party/WebKit/LayoutTests/TestExpectations
@@ -533,4 +533,5 @@
 
 # Crashes on Linux ASAN
 crbug.com/312639 [ Linux ] fast/dom/HTMLObjectElement/beforeload-set-text-crash.xhtml [ Crash Pass ]
-crbug.com/312910 webaudio/audiobuffersource-loop-points.html [ Crash Timeout Pass ]
\ No newline at end of file
+crbug.com/312910 webaudio/audiobuffersource-loop-points.html [ Crash Timeout Pass ]
+crbug.com/312925 inspector-protocol/heap-profiler/heap-snapshot-with-detached-dom-tree.html [ Failure Pass ]