Update almost all tests (except co19) to use the new try-catch syntax.

tests/language/local_function_test.dart

Index: tests/language/local_function_test.dart
diff --git a/tests/language/local_function_test.dart b/tests/language/local_function_test.dart
index e53dc9afc4bbffccf990300eec2c811193be8202..0ecde13286d057ef1a77997864d36488217abdbd 100644
--- a/tests/language/local_function_test.dart
+++ b/tests/language/local_function_test.dart
@@ -142,21 +142,21 @@ class LocalFunctionTest {
     bool exception_caught = false;
     try {
       f(1, 2);
-    } catch (ClosureArgumentMismatchException e) {
+    } on ClosureArgumentMismatchException catch (e) {
       exception_caught = true;
     }
     Expect.equals(true, exception_caught);
     exception_caught = false;
     try {
       f();
-    } catch (ClosureArgumentMismatchException e) {
+    } on ClosureArgumentMismatchException catch (e) {
       exception_caught = true;
     }
     Expect.equals(true, exception_caught);
     exception_caught = false;
     try {
       f.xyz(0);
-    } catch (NoSuchMethodException e) {
+    } on NoSuchMethodException catch (e) {
       exception_caught = true;
     }
     Expect.equals(true, exception_caught);
@@ -166,7 +166,7 @@ class LocalFunctionTest {
     exception_caught = false;
     try {
       f(1);
-    } catch (ObjectNotClosureException e) {
+    } on ObjectNotClosureException catch (e) {
       exception_caught = true;
     }
     Expect.equals(true, exception_caught);