Re-enable OSR.

Fixes two bugs:
- Dealing with proxy methods, which the compiler and code cache
  does not handle.
- Dealing with phi types, that may have been speculatively optimized
  but do not hold once jumping to the compiled code.

Change-Id: I7dcd9976ef7b12128fff95d2b7ed3e69cc42e90a
diff --git a/runtime/jit/jit_code_cache.cc b/runtime/jit/jit_code_cache.cc
index 464c441..9111ddf 100644
--- a/runtime/jit/jit_code_cache.cc
+++ b/runtime/jit/jit_code_cache.cc
@@ -578,7 +578,7 @@
       }
     }
 
-    // Empty osr method map, as osr compile code will be deleted (except the ones
+    // Empty osr method map, as osr compiled code will be deleted (except the ones
     // on thread stacks).
     osr_code_map_.clear();
   }