Remove HandlerKindField and just encode the handlerkind as the only extra-ic-state.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 5cbeaacb5c262e4f21fbc106ccf91d6f8ce8d4e6..90e7c0ddaddb97d399f75e8de42c79abbaa679b6 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -882,9 +882,7 @@ class HICStub: public HydrogenCodeStub {
 class HandlerStub: public HICStub {
  public:
   virtual Code::Kind GetCodeKind() const { return Code::HANDLER; }
-  virtual ExtraICState GetExtraICState() {
-    return Code::HandlerKindField::encode(kind());
-  }
+  virtual ExtraICState GetExtraICState() { return kind(); }
 
  protected:
   HandlerStub() : HICStub() { }