[testing] Extend interpreter testing to webkit suite.

test/webkit/webkit.status

Index: test/webkit/webkit.status
diff --git a/test/webkit/webkit.status b/test/webkit/webkit.status
index fa527427bc087239db10ce4604b4e08d6bd1b03b..2e2bbcc928d683504af8625a6e0b790699ade085 100644
--- a/test/webkit/webkit.status
+++ b/test/webkit/webkit.status
@@ -97,6 +97,15 @@
 }],  # 'gc_stress == True and mode == debug'
 
 ##############################################################################
+['ignition == True', {
+  # TODO(4680): Throws a RangeError due to stack overflow. Need investigation.
+  'fast/js/excessive-comma-usage': [SKIP],  # Stack is brittle, SKIP not FAIL.
+
+  # TODO(4680): Assertion is C++ collection, looks like ordinary bug.
+  'fast/js/parser-syntax-check': [SKIP],  # Only some C++ libs, SKIP not FAIL.
+}],  # ignition == True
+
+##############################################################################
 ['gcov_coverage', {
   # Tests taking too long or getting too large call stacks.
   'fast/js/excessive-comma-usage': [SKIP],