Refactor fast API call.

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 513d4a8501b9210ab23ae2edd4b377cc1fcb8188..a4736e82b37e8921b04946068661e2a353454bb6 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -4241,13 +4241,6 @@ bool HGraphBuilder::TryCallApply(Call* expr) {
 }
 
 
-static bool HasCustomCallGenerator(Handle<JSFunction> function) {
-  SharedFunctionInfo* info = function->shared();
-  return info->HasBuiltinFunctionId() &&
-      CallStubCompiler::HasCustomCallGenerator(info->builtin_function_id());
-}
-
-
 void HGraphBuilder::VisitCall(Call* expr) {
   Expression* callee = expr->expression();
   int argument_count = expr->arguments()->length() + 1;  // Plus receiver.
@@ -4305,13 +4298,11 @@ void HGraphBuilder::VisitCall(Call* expr) {
         return;
       }
 
-      if (HasCustomCallGenerator(expr->target()) ||
-          CallOptimization(*expr->target()).is_simple_api_call() ||
+      if (CallStubCompiler::HasCustomCallGenerator(*expr->target()) ||
           expr->check_type() != RECEIVER_MAP_CHECK) {
         // When the target has a custom call IC generator, use the IC,
-        // because it is likely to generate better code.  Similarly, we
-        // generate better call stubs for some API functions.
-        // Also use the IC when a primitive receiver check is required.
+        // because it is likely to generate better code.  Also use the IC
+        // when a primitive receiver check is required.
         HContext* context = new HContext;
         AddInstruction(context);
         call = PreProcessCall(new HCallNamed(context, name, argument_count));