Inlining support in optimizing.

Currently only inlines simple things that don't require an
environment, such as:
- Returning a constant.
- Returning a parameter.
- Returning an arithmetic operation.

Change-Id: Ie844950cb44f69e104774a3cf7a8dea66bc85661
diff --git a/compiler/optimizing/graph_checker_test.cc b/compiler/optimizing/graph_checker_test.cc
index 39def82..923468f 100644
--- a/compiler/optimizing/graph_checker_test.cc
+++ b/compiler/optimizing/graph_checker_test.cc
@@ -62,7 +62,7 @@
   ASSERT_NE(graph, nullptr);
 
   graph->BuildDominatorTree();
-  graph->TransformToSSA();
+  graph->TransformToSsa();
 
   SSAChecker ssa_checker(&allocator, graph);
   ssa_checker.Run();