Optimizing: Tag arena allocations in HGraph.

Replace GrowableArray with ArenaVector in HGraph and related
classes HEnvironment, HLoopInformation, HInvoke and HPhi,
and tag allocations with new arena allocation types.

Change-Id: I3d79897af405b9a1a5b98bfc372e70fe0b3bc40d
diff --git a/compiler/optimizing/licm.cc b/compiler/optimizing/licm.cc
index 5b89b4e..c38bbe3 100644
--- a/compiler/optimizing/licm.cc
+++ b/compiler/optimizing/licm.cc
@@ -80,7 +80,7 @@
 void LICM::Run() {
   DCHECK(side_effects_.HasRun());
   // Only used during debug.
-  ArenaBitVector visited(graph_->GetArena(), graph_->GetBlocks().Size(), false);
+  ArenaBitVector visited(graph_->GetArena(), graph_->GetBlocks().size(), false);
 
   // Post order visit to visit inner loops before outer loops.
   for (HPostOrderIterator it(*graph_); !it.Done(); it.Advance()) {