Revert of Refactor SharedFunctionInfo::IsBuiltin.

src/crankshaft/hydrogen.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/crankshaft/hydrogen.h"
 
 #include <memory>
 #include <sstream>
 
 #include "src/allocation-site-scopes.h"
@@ skipping 7947 matching lines @@
 
   // Precondition: call is monomorphic and we have found a target with the
   // appropriate arity.
   Handle<JSFunction> caller = current_info()->closure();
   Handle<SharedFunctionInfo> target_shared(target->shared());
 
   // Always inline functions that force inlining.
   if (target_shared->force_inline()) {
     return 0;
   }
-  if (!target->shared()->IsUserJavaScript()) {
+  if (target->shared()->IsBuiltin()) {
     return kNotInlinable;
   }
 
   if (target_shared->IsApiFunction()) {
     TraceInline(target, caller, "target is api function");
     return kNotInlinable;
   }
 
   // Do a quick check on source code length to avoid parsing large
   // inlining candidates.
@@ skipping 5030 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8