Call JS functions via native context instead of js builtins object.

src/hydrogen.h

 // Copyright 2012 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.
 
 #ifndef V8_HYDROGEN_H_
 #define V8_HYDROGEN_H_
 
 #include "src/accessors.h"
 #include "src/allocation.h"
 #include "src/ast.h"
@@ skipping 1982 matching lines @@
 
 
 template<>
 inline HInstruction* HGraphBuilder::AddUncasted<HReturn>(HConstant* value) {
   return Add<HReturn>(value);
 }
 
 
 template<>
 inline HCallRuntime* HGraphBuilder::Add<HCallRuntime>(
-    Handle<String> name,
     const Runtime::Function* c_function,
     int argument_count) {
-  HCallRuntime* instr = New<HCallRuntime>(name, c_function, argument_count);
+  HCallRuntime* instr = New<HCallRuntime>(c_function, argument_count);
   if (graph()->info()->IsStub()) {
     // When compiling code stubs, we don't want to save all double registers
     // upon entry to the stub, but instead have the call runtime instruction
     // save the double registers only on-demand (in the fallback case).
     instr->set_save_doubles(kSaveFPRegs);
   }
   AddInstruction(instr);
   return instr;
 }
 
 
 template<>
 inline HInstruction* HGraphBuilder::AddUncasted<HCallRuntime>(
     Handle<String> name,
     const Runtime::Function* c_function,
     int argument_count) {
-  return Add<HCallRuntime>(name, c_function, argument_count);
+  return Add<HCallRuntime>(c_function, argument_count);
 }
 
 
 template<>
 inline HContext* HGraphBuilder::New<HContext>() {
   return HContext::New(zone());
 }
 
 
 template<>
@@ skipping 1006 matching lines @@
   }
 
  private:
   HGraphBuilder* builder_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_