Replace a few std::vector with ArenaVector in Mir2Lir.

Change-Id: I7867d60afc60f57cdbbfd312f02883854d65c805
diff --git a/compiler/dex/quick/mir_to_lir.h b/compiler/dex/quick/mir_to_lir.h
index 88ca911..6fdd764 100644
--- a/compiler/dex/quick/mir_to_lir.h
+++ b/compiler/dex/quick/mir_to_lir.h
@@ -146,7 +146,7 @@
                             uint32_t method_idx, uintptr_t direct_code,
                             uintptr_t direct_method, InvokeType type);
 
-typedef std::vector<uint8_t> CodeBuffer;
+typedef ArenaVector<uint8_t> CodeBuffer;
 typedef uint32_t CodeOffset;           // Native code offset in bytes.
 
 struct UseDefMasks {
@@ -1742,10 +1742,10 @@
     // The source mapping table data (pc -> dex). More entries than in encoded_mapping_table_
     DefaultSrcMap src_mapping_table_;
     // The encoding mapping table data (dex -> pc offset and pc offset -> dex) with a size prefix.
-    std::vector<uint8_t> encoded_mapping_table_;
+    ArenaVector<uint8_t> encoded_mapping_table_;
     ArenaVector<uint32_t> core_vmap_table_;
     ArenaVector<uint32_t> fp_vmap_table_;
-    std::vector<uint8_t> native_gc_map_;
+    ArenaVector<uint8_t> native_gc_map_;
     ArenaVector<LinkerPatch> patches_;
     int num_core_spills_;
     int num_fp_spills_;