Support if-statements in analyzer2dart.

pkg/analyzer2dart/test/end2end_test.dart

Index: pkg/analyzer2dart/test/end2end_test.dart
diff --git a/pkg/analyzer2dart/test/end2end_test.dart b/pkg/analyzer2dart/test/end2end_test.dart
index c5f8ecf25253bc69e2ca133f7892814bd6120cb4..6d2592997606a32a53a3491a6be40be4b8be4b63 100644
--- a/pkg/analyzer2dart/test/end2end_test.dart
+++ b/pkg/analyzer2dart/test/end2end_test.dart
@@ -435,6 +435,57 @@ main(a) {
 }
 ''');
   });
+
+  test('If statement', () {
+    checkResult('''
+main(a) {
+  if (a) {
+    print(0);
+  }
+}
+''', '''
+main(a) {
+  if (a) {
+    print(0);
+  }
+}
+''');
+
+    checkResult('''
+main(a) {
+  if (a) {
+    print(0);
+  } else {
+    print(1);
+  }
+}
+''', '''
+main(a) {
+  a ? print(0) : print(1);
+}
+''');
+
+    checkResult('''
+main(a) {
+  if (a) {
+    print(0);
+  } else {
+    print(1);
+    print(2);
+  }
+}
+''', '''
+main(a) {
+  if (a) {
+    print(0);
+  } else {
+    print(1);
+    print(2);
+  }
+}
+''');
+
+  });
 }
 
 checkResult(String input, [String expectedOutput]) {