Reapply "Inlining of static calls with trivial function bodies."

runtime/vm/flow_graph_inliner.h

Index: runtime/vm/flow_graph_inliner.h
diff --git a/runtime/vm/flow_graph_inliner.h b/runtime/vm/flow_graph_inliner.h
new file mode 100644
index 0000000000000000000000000000000000000000..ba2d080f7aa4617f538c138ca78e77270489adaa
--- /dev/null
+++ b/runtime/vm/flow_graph_inliner.h
@@ -0,0 +1,29 @@
+// 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.
+
+#ifndef VM_FLOW_GRAPH_INLINER_H_
+#define VM_FLOW_GRAPH_INLINER_H_
+
+#include "vm/allocation.h"
+
+namespace dart {
+
+class FlowGraph;
+
+class FlowGraphInliner : ValueObject {
+ public:
+  explicit FlowGraphInliner(FlowGraph* flow_graph)
+      : flow_graph_(flow_graph) { }
+
+  // The flow graph is destructively updated upon inlining.
+  void Inline();
+
+ private:
+  FlowGraph* flow_graph_;
+  DISALLOW_COPY_AND_ASSIGN(FlowGraphInliner);
+};
+
+}  // namespace dart
+
+#endif  // VM_FLOW_GRAPH_INLINER_H_