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/ssa_liveness_analysis.h b/compiler/optimizing/ssa_liveness_analysis.h
index ef396cb..3aedaa5 100644
--- a/compiler/optimizing/ssa_liveness_analysis.h
+++ b/compiler/optimizing/ssa_liveness_analysis.h
@@ -1106,11 +1106,11 @@
   SsaLivenessAnalysis(HGraph* graph, CodeGenerator* codegen)
       : graph_(graph),
         codegen_(codegen),
-        block_infos_(graph->GetArena(), graph->GetBlocks().Size()),
+        block_infos_(graph->GetArena(), graph->GetBlocks().size()),
         instructions_from_ssa_index_(graph->GetArena(), 0),
         instructions_from_lifetime_position_(graph->GetArena(), 0),
         number_of_ssa_values_(0) {
-    block_infos_.SetSize(graph->GetBlocks().Size());
+    block_infos_.SetSize(graph->GetBlocks().size());
   }
 
   void Analyze();