Revert r23330 and r23136 because of a bug with loop invariant code motion.

runtime/vm/flow_graph_inliner.cc

Index: runtime/vm/flow_graph_inliner.cc
===================================================================
--- runtime/vm/flow_graph_inliner.cc	(revision 23951)
+++ runtime/vm/flow_graph_inliner.cc	(working copy)
@@ -612,10 +612,6 @@
       // Add the function to the cache.
       if (!in_cache) function_cache_.Add(parsed_function);
 
-      // Functions can be inlined before they are optimized.
-      // If not yet present, allocate deoptimization history array.
-      function.EnsureDeoptHistory();
-
       // Build succeeded so we restore the bailout jump.
       inlined_ = true;
       inlined_size_ += size;