Run DCE again after all the other optimizations have run.

On docs this doubles the amount of instructions removed.

Change-Id: I1712a92c0c0b3b32b111d194b64d8ea81d652822
diff --git a/compiler/optimizing/inliner.cc b/compiler/optimizing/inliner.cc
index 6d2a8d7..bffd639 100644
--- a/compiler/optimizing/inliner.cc
+++ b/compiler/optimizing/inliner.cc
@@ -190,7 +190,7 @@
   }
 
   // Run simple optimizations on the graph.
-  HDeadCodeElimination dce(callee_graph);
+  HDeadCodeElimination dce(callee_graph, stats_);
   HConstantFolding fold(callee_graph);
   InstructionSimplifier simplify(callee_graph, stats_);