Refactor the code for making inlining decisions.

runtime/vm/flow_graph.cc

Index: runtime/vm/flow_graph.cc
diff --git a/runtime/vm/flow_graph.cc b/runtime/vm/flow_graph.cc
index 03074f73d50856f8155ff48993acfc79fc82616b..f1ae27612858a45db7cefb6c9a1788fa3e38c4f9 100644
--- a/runtime/vm/flow_graph.cc
+++ b/runtime/vm/flow_graph.cc
@@ -208,8 +208,9 @@ bool FlowGraph::VerifyUseLists() {
 #endif  // DEBUG
 
 
-void FlowGraph::ComputeSSA(intptr_t next_virtual_register_number,
-                           GrowableArray<Definition*>* inlining_parameters) {
+void FlowGraph::ComputeSSA(
+    intptr_t next_virtual_register_number,
+    ZoneGrowableArray<Definition*>* inlining_parameters) {
   ASSERT((next_virtual_register_number == 0) || (inlining_parameters != NULL));
   current_ssa_temp_index_ = next_virtual_register_number;
   GrowableArray<BitVector*> dominance_frontier;
@@ -399,7 +400,7 @@ void FlowGraph::InsertPhis(
 
 
 void FlowGraph::Rename(GrowableArray<PhiInstr*>* live_phis,
-                       GrowableArray<Definition*>* inlining_parameters) {
+                       ZoneGrowableArray<Definition*>* inlining_parameters) {
   // TODO(fschneider): Support catch-entry.
   if (graph_entry_->SuccessorCount() > 1) {
     Bailout("Catch-entry support in SSA.");