Revert "Convert UnaryOpStub to a HydrogenCodeStub"

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 d14435e85e9d78b15de131f30b5384a162d309e7..96266af119f8821a960aed34bb0cfce1076de46f 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -764,44 +764,6 @@ Handle<Code> CompareNilICStub::GenerateCode() {
 
 
 template <>
-HValue* CodeStubGraphBuilder<UnaryOpStub>::BuildCodeInitializedStub() {
-  UnaryOpStub* stub = casted_stub();
-  Handle<Type> type = stub->GetType(graph()->isolate());
-  HValue* input = GetParameter(0);
-
-  // Prevent unwanted HChange being inserted to ensure that the stub
-  // deopts on newly encountered types.
-  if (!type->Maybe(Type::Double())) {
-    input = AddInstruction(new(zone())
-        HForceRepresentation(input, Representation::Smi()));
-  }
-
-  if (!type->Is(Type::Number())) {
-    // If we expect to see other things than Numbers, we will create a generic
-    // stub, which handles all numbers and calls into the runtime for the rest.
-    IfBuilder if_number(this);
-    if_number.If<HIsNumberAndBranch>(input);
-    if_number.Then();
-    HInstruction* res = BuildUnaryMathOp(input, type, stub->operation());
-    if_number.Return(AddInstruction(res));
-    if_number.Else();
-    AddInstruction(new(zone()) HPushArgument(GetParameter(0)));
-    if_number.Return(AddInstruction(new(zone()) HCallConstantFunction(
-        stub->ToJSFunction(isolate()), 1)));
-    if_number.End();
-    return graph()->GetConstantUndefined();
-  }
-
-  return AddInstruction(BuildUnaryMathOp(input, type, stub->operation()));
-}
-
-
-Handle<Code> UnaryOpStub::GenerateCode() {
-  return DoGenerateCode(this);
-}
-
-
-template <>
 HValue* CodeStubGraphBuilder<ToBooleanStub>::BuildCodeInitializedStub() {
   ToBooleanStub* stub = casted_stub();