Migrated test block 20 to Dart 2.0.

tests/corelib_2/corelib_2.status

Index: tests/corelib_2/corelib_2.status
diff --git a/tests/corelib_2/corelib_2.status b/tests/corelib_2/corelib_2.status
index 4f72ab192f8562617f683f5b4b4f82dd979408f9..5efff1ee9d6480fcfffb626202aaf14aff4b65d5 100644
--- a/tests/corelib_2/corelib_2.status
+++ b/tests/corelib_2/corelib_2.status
@@ -50,6 +50,19 @@ const_list_set_range_test: RuntimeError # Issue 29921
 compare_to2_test: RuntimeError # Issue 30170
 date_time10_test: RuntimeError # Issue 29921
 hash_set_test/01: RuntimeError # Issue 29921
+regexp/bol-with-multiline_test: RuntimeError # Issue 29921
+regexp/invalid-range-in-class_test: RuntimeError # Issue 29921
+regexp/look-ahead_test: RuntimeError # Issue 29921
+regexp/loop-capture_test: RuntimeError # Issue 29921
+regexp/malformed-escapes_test: RuntimeError # Issue 29921
+regexp/many-brackets_test: RuntimeError # Issue 29921
+regexp/negative-special-characters_test: RuntimeError # Issue 29921
+regexp/no-extensions_test: RuntimeError # Issue 29921
+regexp/non-bmp_test: RuntimeError # Issue 29921
+regexp/non-capturing-backtracking_test: RuntimeError # Issue 29921
+regexp/non-capturing-groups_test: RuntimeError # Issue 29921
+regexp/non-character_test: RuntimeError # Issue 29921
+regexp/non-greedy-parentheses_test: RuntimeError # Issue 29921
 regexp/quantified-assertions_test: RuntimeError # Issue 29921
 regexp/range-bound-ffff_test: RuntimeError # Issue 29921
 regexp/range-out-of-order_test: RuntimeError # Issue 29921
@@ -281,6 +294,14 @@ int_from_environment3_test/05: Crash
 int_modulo_arith_test/bignum: Crash
 int_modulo_arith_test/modPow: Crash
 int_modulo_arith_test/none: Crash
+regexp/invalid-range-in-class_test: Crash
+regexp/issue_19193_test: Crash
+regexp/lastindex_test: Crash
+regexp/lookahead_test: Crash
+regexp/multiline_test: Crash
+regexp/negative-special-characters_test: Crash
+regexp/no-extensions_test: Crash
+regexp/non-capturing-groups_test: Crash
 regexp/range-out-of-order_test: Crash
 regexp/regexp_kde_test: Crash
 regexp/regexp_test: Crash
@@ -381,6 +402,15 @@ double_parse_test/02: Crash
 double_parse_test/03: Crash
 double_parse_test/04: Crash
 double_parse_test/none: Crash
+regexp/bol-with-multiline_test: Crash
+regexp/look-ahead_test: Crash
+regexp/loop-capture_test: Crash
+regexp/malformed-escapes_test: Crash
+regexp/many-brackets_test: Crash
+regexp/non-bmp_test: Crash
+regexp/non-capturing-backtracking_test: Crash
+regexp/non-character_test: Crash
+regexp/non-greedy-parentheses_test: Crash
 regexp/quantified-assertions_test: Crash
 regexp/range-bound-ffff_test: Crash
 regexp/ranges-and-escaped-hyphens_test: Crash