Add support for catch statements.

pkg/kernel/testcases/interpreter/try_catch_finally_test.dart

Index: pkg/kernel/testcases/interpreter/try_catch_finally_test.dart
diff --git a/pkg/kernel/testcases/interpreter/try_catch_finally_test.dart b/pkg/kernel/testcases/interpreter/try_catch_finally_test.dart
index fc4649d4aa488fd54d5de226a6d5a67d2af5e3d0..5ad2a3f8899fb5b3340011ff05b1d0afddb75854 100644
--- a/pkg/kernel/testcases/interpreter/try_catch_finally_test.dart
+++ b/pkg/kernel/testcases/interpreter/try_catch_finally_test.dart
@@ -9,11 +9,13 @@ main() {
     print('hello2');
   }
   print('hello3');
-  print(foo());
-  print(bar());
+  print(fReturns());
+  print(fFinalizes());
+  print(fThrows());
 }
 
-int foo() {
+/// Tests that the return in finally is executed.
+int fReturns() {
   try {
     print('foo 1');
     return 1;
@@ -23,7 +25,8 @@ int foo() {
   }
 }
 
-int bar() {
+/// Tests that finally is executed before returning.
+int fFinalizes() {
   try {
     print('bar 1');
     return 1;
@@ -32,3 +35,16 @@ int bar() {
   }
   return 0;
 }
+
+/// Tests that the exception is caught.
+int fThrows() {
+  try {
+    print(37);
+    throw 'Error';
+  } catch (e, _) {
+    print('Caught $e');
+  } finally {
+    print("Finalizer");
+  }
+  return 34;
+}