Function Decl formatter fixes (external and getters/setters) --- (dartbug.com/15914).

pkg/analyzer/test/services/data/cu_tests.data

Index: pkg/analyzer/test/services/data/cu_tests.data
===================================================================
--- pkg/analyzer/test/services/data/cu_tests.data	(revision 31484)
+++ pkg/analyzer/test/services/data/cu_tests.data	(working copy)
@@ -33,4 +33,18 @@
 /**
  * Y.
  */
-abstract class Y = String;
+abstract class Y = String;
+>>>
+external void printToConsole(String line);
+<<<
+external void printToConsole(String line);
+>>>
+void set foo(int bar) {
+}
+
+int get baz => null;
+<<<
+void set foo(int bar) {
+}
+
+int get baz => null;