Inlining of static functions: applying Florian's CL.

tests/compiler/dart2js/generate_at_use_site_test.dart

Index: tests/compiler/dart2js/generate_at_use_site_test.dart
===================================================================
--- tests/compiler/dart2js/generate_at_use_site_test.dart	(revision 11223)
+++ tests/compiler/dart2js/generate_at_use_site_test.dart	(working copy)
@@ -15,7 +15,11 @@
 // for the result of recursively calling fib
 // which introduces new variables because we
 // now have multiple users.
-add(x, y) => x + y;
+// The 'if' has been added to avoid inlining of add.
+add(x, y) {
+  if (x == -1) return x;
+  return x + y;
+}
 """;
 
 main() {