Revive throw as an expression but not for rethrow.

tests/co19/co19-dart2js.status

Index: tests/co19/co19-dart2js.status
===================================================================
--- tests/co19/co19-dart2js.status	(revision 15894)
+++ tests/co19/co19-dart2js.status	(working copy)
@@ -31,7 +31,6 @@
 Language/05_Variables/05_Variables_A07_t10: Fail # TODO(ahe): Please triage this failure.
 Language/05_Variables/05_Variables_A08_t01: Fail # TODO(ahe): Please triage this failure.
 Language/05_Variables/1_Evaluation_of_Implicit_Variable_Getters_A01_t05: Fail # TODO(ahe): Please triage this failure.
-Language/06_Functions/06_Functions_A01_t22: Fail # TODO(ahe): Please triage this failure.
 Language/07_Classes/07_Classes_A03_t07: Fail # TODO(ahe): Please triage this failure.
 Language/07_Classes/1_Instance_Methods_A06_t01: Fail # TODO(ahe): Please triage this failure.
 Language/07_Classes/1_Instance_Methods_A06_t02: Fail # TODO(ahe): Please triage this failure.
@@ -54,7 +53,6 @@
 Language/11_Expressions/01_Constants_A13_t06: Fail # TODO(ahe): Please triage this failure.
 Language/11_Expressions/01_Constants_A20_t03: Fail # TODO(ahe): Please triage this failure.
 Language/11_Expressions/05_Strings/1_String_Interpolation_A01_t06: Fail # TODO(ahe): Please triage this failure.
-Language/11_Expressions/08_Throw_A01_t01: Fail # TODO(ahe): Please triage this failure.
 Language/11_Expressions/08_Throw_A05_t01: Fail # TODO(ahe): Please triage this failure.
 Language/11_Expressions/08_Throw_A05_t02: Fail # TODO(ahe): Please triage this failure.
 Language/11_Expressions/08_Throw_A05_t03: Fail # TODO(ahe): Please triage this failure.
@@ -488,7 +486,6 @@
 Language/05_Variables/05_Variables_A01_t13: Fail # Checks that variable declaration cannot contain both 'const' and 'final'.
 Language/05_Variables/05_Variables_A01_t14: Fail # Checks that variable declaration cannot contain 'const', 'final' and 'var' simultaneously.
 Language/05_Variables/05_Variables_A01_t15: Fail # Checks that a variable declaration cannot contain the 'abstract' keyword.
-Language/05_Variables/05_Variables_A04_t01: Fail # Checks that a compile-time error occurs if a local constant variable is redefined.
 Language/05_Variables/05_Variables_A05_t01: Fail # Checks that a compile-time error occurs if a constant variable is not initialized.
 Language/06_Functions/06_Functions_A01_t31: Fail # Checks that functions can't be declared as static inside of a function body.
 Language/06_Functions/1_Function_Declaration_A01_t01: Fail # Checks that it is a compile-time error to preface library function with 'static'.