Make Clang 3.0 happy about static cast in DoGenerateCode.

src/code-stubs-hydrogen.cc

Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
index 775916adc52b7c28250c2c2eae085b134d6dc3a3..027517a835ce9b40b71a2b84362b19bcfa2669c9 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -251,8 +251,7 @@ Handle<Code> HydrogenCodeStub::GenerateLightweightMissCode() {
 template <class Stub>
 static Handle<Code> DoGenerateCode(Stub* stub) {
   Isolate* isolate = stub->isolate();
-  CodeStub::Major  major_key =
-      static_cast<HydrogenCodeStub*>(stub)->MajorKey();
+  CodeStub::Major major_key = static_cast<CodeStub*>(stub)->MajorKey();
   CodeStubInterfaceDescriptor* descriptor =
       isolate->code_stub_interface_descriptor(major_key);
   if (!descriptor->IsInitialized()) {