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

tests/language/function_type_test.dart

Index: tests/language/function_type_test.dart
diff --git a/tests/language/function_type_test.dart b/tests/language/function_type_test.dart
index 647770aad354eaaafb0471936eeabe01793f2742..4beb620b2a07e9f6dac9e384b4360d911a26cd2c 100644
--- a/tests/language/function_type_test.dart
+++ b/tests/language/function_type_test.dart
@@ -8,7 +8,7 @@ isCheckedMode() {
     var i = 1;
     String s = i;
     return false;
-  } catch(var e) {
+  } catch (e) {
     return true;
   }
 }
@@ -27,7 +27,7 @@ main() {
     // However, run time type of returned function is not a subtype of FListInt.
     // Run time type check should not be eliminated.
     FListInt fli = f();
-  } catch (TypeError error) {
+  } on TypeError catch (error) {
     got_type_error = true;
   }
   // Type error expected in checked mode only.