Deprecate semi-correct CompilationInfo::flags predicate.

src/codegen.cc

Index: src/codegen.cc
diff --git a/src/codegen.cc b/src/codegen.cc
index c9de2b1af16c666177617a5600ae30f5298a1a34..cc5495bc1b91612ca409d9eca06fd654ac3d3e17 100644
--- a/src/codegen.cc
+++ b/src/codegen.cc
@@ -149,10 +149,18 @@ void CodeGenerator::MakeCodePrologue(CompilationInfo* info, const char* kind) {
 
 
 Handle<Code> CodeGenerator::MakeCodeEpilogue(MacroAssembler* masm,
-                                             Code::Flags flags,
                                              CompilationInfo* info) {
   Isolate* isolate = info->isolate();
 
+  Code::Flags flags =
+      info->code_stub() != nullptr
+          ? Code::ComputeFlags(info->code_stub()->GetCodeKind(),
+                               info->code_stub()->GetICState(),
+                               info->code_stub()->GetExtraICState(),
+                               info->code_stub()->GetStubType())
+          : Code::ComputeFlags(info->IsOptimizing() ? Code::OPTIMIZED_FUNCTION
+                                                    : Code::FUNCTION);
+
   // Allocate and install the code.
   CodeDesc desc;
   bool is_crankshafted =