Improve exception handling:

dart/tests/language/language-leg.status

Index: dart/tests/language/language-leg.status
diff --git a/dart/tests/language/language-leg.status b/dart/tests/language/language-leg.status
index 7a6686cfc595d041bd71743fc16273e269c398c8..2acbddc935c94ce50118b50f8030cd19be90ab31 100644
--- a/dart/tests/language/language-leg.status
+++ b/dart/tests/language/language-leg.status
@@ -38,6 +38,7 @@ DeoptNoFeedbackTest: Fail # Internal Error: Cannot find value
 DoWhileTest: Fail # SsaBuilder for loop with aborting body not implemented
 DynamicTest: Fail # cannot resolve type F1
 EmptyBlockCaseTest: Fail # switch cases are not implemented
+Factory3Test: Fail # Handling of compile-time constants.
 Factory4Test: Fail # named constructors with type arguments are not implemented
 FannkuchTest: Fail # Expect.equals(expected: <49>, actual: <0>) fails.
 FinalSyntaxTest/none: Fail # CompileTimeConstantEvaluator not implemented
@@ -84,7 +85,9 @@ NamedParameters3Test: Fail # Unimplemented non-matching static call
 NamedParameters4Test: Fail # Unimplemented non-matching static call
 NamedParametersTypeTest: Fail # Internal Error: Cannot find value
 NamingTest: Fail # Internal Error: Cannot find value
+NanInfinityTest: Fail # CompileTimeConstantEvaluator not implemented
 NonParameterizedFactory2Test: Fail # named constructors with type arguments are not implemented
+NullToStringTest: Fail # Closurization of intercepted methods.
 NumbersTest: Fail # cannot resolve type Smi
 ObjectDynamicMethodTest: Fail # map not implemented
 OptimizedSetterTest: Fail # Internal Error: Cannot find value
@@ -103,13 +106,11 @@ Prefix22Test: Fail # library prefixes not handled
 PseudoKWTest: Fail # Unexpected token '('
 RegExpTest: Fail # named constructors with type arguments are not implemented
 ResourceTest: Fail # #resource tag not recognized - issue 1807
-RethrowTest: Fail # SsaBuilder: throw without expression not implemented
-SavannahTest: Fail # SsaBuilder.visitContinueStatement not implemented
+StackTraceTest: Fail # SsaBuilder: throw without expression not implemented
 StatementTest: Fail # switch cases are not implemented
 StaticFieldTest: Fail # cannot resolve setValues
 StaticFinalFieldTest: Fail # map not implemented
 StringInterpolate2Test: Fail # map not implemented
-StringInterpolateNPETest: Fail # TypeError: Cannot call method 'get$name' of undefined
 SuperAllNamedConstructorTest: Fail # Internal Error: Cannot find value
 SuperFieldAccessTest: Fail # Internal Error: SsaBuilder.visitIdentifier on non-this
 SuperFieldTest: Fail # no method named city in class B
@@ -123,7 +124,6 @@ SwitchLabelTest: Fail # switch cases are not implemented
 SwitchScopeTest: Fail # switch cases are not implemented
 SwitchTest: Fail # switch cases are not implemented
 SyntaxTest/none: Fail # non-empty instruction stack
-Throw3Test: Fail # SsaBuilder: throw without expression not implemented
 TopLevelFuncTest: Fail # cannot find tokens to produce error message for ()=> k++.
 TopLevelPrefixedDeclarationTest: Fail # library prefixes not handled
 ToplevelCollision2Test/none: Fail # duplicate definition
@@ -131,14 +131,12 @@ TryCatch3Test: Fail # Internal Error: Cannot find value
 TypeChecksInFactoryMethodTest: Fail # named constructors with type arguments are not implemented
 TypeDartcTest: Fail # non-empty instruction stack
 WhileTest: Fail # SsaBuilder for loop with aborting body not implemented
-NanInfinityTest: Fail # CompileTimeConstantEvaluator not implemented
 
 
 # Implementation errors (library or generated code).
 AssertionTest: Fail # Expect.equals(expected: <0>, actual: <null>) fails.
 BadNamedParametersTest: Fail # NullPointerException
 BitOperationsTest: Fail # Expect.equals(expected: <18446744073709552000>, actual: <1>) fails.
-CallThroughNullGetterTest: Fail # Expect.fail('Wrong exception.  Expected: ObjectNotClosureException got: null')
 ConstEscapeFrogTest: Fail # Expect.equals(expected: <null>, actual: <Instance of 'Bar'>) fails.
 ConstListTest: Fail # Expect.equals(expected: <true>, actual: <false>) fails.
 Constructor2Test: Fail # Expect.equals(expected: <1-2-3-4-5-6-7->, actual: <1-2-3-5-4-6-7->) fails.
@@ -166,15 +164,6 @@ ToStringAsFixedTest: Fail # Expect.equals(expected: <0.0000006>, actual: <0.0000
 TypedMessageTest: Fail # SyntaxError: Unexpected token this
 
 
-# Mapping of JS errors to Dart exceptions.
-Factory3Test: Fail # TypeError: Cannot call method 'prepend$1' of undefined
-MethodInvocationTest: Fail # TypeError: Cannot call method 'foo$0' of undefined
-NullToStringTest: Fail # TypeError: Cannot call method 'get$toString' of undefined
-StackOverflowTest: Fail # RangeError: Maximum call stack size exceeded
-StackTraceTest: Fail # ReferenceError: stacktrace is not defined
-StringTest: Fail # TypeError: Object Hello has no method 'operator$indexSet$2'
-
-
 #
 # The following tests are all semantic tests that we can rely on dartc
 # catching for now.