Revert several inlining related changes.

tests/language/deopt_inlined_function_test.dart

Index: tests/language/deopt_inlined_function_test.dart
diff --git a/tests/language/deopt_inlined_function_test.dart b/tests/language/deopt_inlined_function_test.dart
index b0d88445bb857c1fc5760f08622d738a57734ef6..d4a5e84b8e8d4274af816ae921ef4b2b653af24d 100644
--- a/tests/language/deopt_inlined_function_test.dart
+++ b/tests/language/deopt_inlined_function_test.dart
@@ -1,7 +1,8 @@
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
-// Test deoptimization from within an inlined function.
+// Test deoptimization caused by running code that did not collect type
+// feedback before.
 
 class A {
   deopt_here() => 1;
@@ -29,5 +30,5 @@ main() {
   for (var i = 0; i < 2000; i++) foo(7);
   Expect.equals(42, foo(2));
   obj = new B();
-  Expect.equals(42, foo(3));  // <-- deoptimization via foo/bar/obj.deopt_here
+  Expect.equals(42, foo(3));
 }