Use dart2js_plaform.dill from the sdk.

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..15a692ea7a9c79a93d051fbb11c94bb86441a899 100644
--- a/tests/corelib_2/corelib_2.status
+++ b/tests/corelib_2/corelib_2.status
@@ -267,6 +267,12 @@ date_time4_test: Crash
 date_time7_test: Crash
 date_time_parse_test: Crash
 date_time_test: Crash
+double_floor2_test: Crash
+double_parse_test/01: Crash
+double_parse_test/02: Crash
+double_parse_test/03: Crash
+double_parse_test/04: Crash
+double_parse_test/none: Crash
 hash_set_test/01: Crash
 hash_set_test/none: Crash
 hash_set_type_check_test: RuntimeError
@@ -284,6 +290,27 @@ int_modulo_arith_test/none: Crash
 regexp/range-out-of-order_test: Crash
 regexp/regexp_kde_test: Crash
 regexp/regexp_test: Crash
+regexp/regress-regexp-codeflush_test: Crash
+regexp/standalones_test: Crash
+regexp/toString_test: Crash
+regexp/unicode-handling_test: Crash
+regexp/unicodeCaseInsensitive_test: Crash
+set_containsAll_test: Crash
+set_contains_test: Crash
+set_intersection_test: Crash
+set_iterator_test: Crash
+set_removeAll_test: Crash
+set_remove_test: Crash
+set_retainAll_test: Crash
+set_test: Crash
+set_to_string_test: Crash
+shuffle_test: Crash
+sort_test: RuntimeError
+splay_tree_from_iterable_test: Crash
+splay_tree_from_iterables_test: Crash
+splay_tree_test/01: Crash
+splay_tree_test/02: Crash
+splay_tree_test/none: Crash
 stacktrace_fromstring_test: Crash
 stopwatch2_test: Crash
 string_base_vm_test: Crash
@@ -406,9 +433,6 @@ toInt_test: Crash
 type_hashcode_test: Crash
 unicode_test: Crash
 
-[ $compiler == dart2js && $dart2js_with_kernel && $use_sdk ]
-*: Skip # Issue 29626
-
 [$arch == simdbc || $arch == simdbc64]
 regexp/stack-overflow_test: RuntimeError, OK # Smaller limit with irregex interpreter