Migrated test block 27 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 1adfdac6a5245b7f284be7a6b19578e83cc6fb2c..2dada73e0cbb8f8324775b78c1af9f69fda8aaf5 100644
--- a/tests/corelib_2/corelib_2.status
+++ b/tests/corelib_2/corelib_2.status
@@ -43,6 +43,8 @@ core_runtime_types_test: Pass, Fail # Issue 27913
 [ $runtime == flutter ]
 apply3_test: CompileTimeError # mirrors not supported
 bool_from_environment_test: Fail # Flutter Issue 9111
+string_from_environment_test: Fail # Flutter Issue 9111
+string_from_environment2_test: Fail # Flutter Issue 9111
 
 [ $hot_reload || $hot_reload_rollback ]
 big_integer_huge_mul_vm_test: Pass, Slow # Slow
@@ -63,10 +65,17 @@ bool_from_environment2_test/04: MissingCompileTimeError
 bool_from_environment2_test/05: MissingCompileTimeError
 compare_to2_test: RuntimeError
 unicode_test: RuntimeError
+string_case_test/01: RuntimeError
+string_from_environment3_test/01: MissingCompileTimeError
+string_from_environment3_test/02: MissingCompileTimeError
+string_from_environment3_test/03: MissingCompileTimeError
+string_from_environment3_test/04: MissingCompileTimeError
+string_from_environment3_test/05: MissingCompileTimeError
 
 [ $compiler == none && $runtime == drt ]
 bool_from_environment2_test: Skip
 bool_from_environment_test: Skip
+string_case_test/01: Fail # Issue 18061
 
 [ $runtime == ff || $runtime == jsshell ]
 unicode_test: Fail
@@ -76,3 +85,20 @@ big_integer_parsed_mul_div_vm_test: Pass, Slow
 
 [ $compiler == precompiler ]
 big_integer_parsed_mul_div_vm_test: Pass, Timeout # --no_intrinsify
+
+[ ($compiler == none && $runtime == vm) || $compiler == dart2js ]
+string_base_vm_static_test: MissingCompileTimeError
+
+[ $compiler == dart2js && ($runtime == ff || $runtime == jsshell) ]
+string_case_test/01: Fail, OK # Bug in Firefox.
+
+[ $compiler == none && $runtime == drt ]
+string_from_environment2_test: Skip
+string_from_environment3_test: Skip
+string_from_environment_test: Skip
+
+[ $system == windows && $arch == x64 ]
+stopwatch_test: Skip  # Flaky test due to expected performance behaviour.
+
+[ $runtime == vm ]
+string_case_test/01: RuntimeError