Remove some outdated/unused declarations.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1265243003

Cr-Commit-Position: refs/heads/master@{#29997}

src/arguments.h

@@ -283,9 +283,6 @@ static Type __RT_impl_##Name(Arguments args, Isolate* isolate)
 #define RUNTIME_FUNCTION_RETURN_PAIR(Name) \
     RUNTIME_FUNCTION_RETURNS_TYPE(ObjectPair, Name)
 
-#define RUNTIME_ARGUMENTS(isolate, args) \
-  args.length(), args.arguments(), isolate
-
 } }  // namespace v8::internal
 
 #endif  // V8_ARGUMENTS_H_

src/bootstrapper.cc

@@ -317,13 +317,6 @@ class Genesis BASE_EMBEDDED {
                                            FunctionMode function_mode);
   void SetStrongFunctionInstanceDescriptor(Handle<Map> map);
 
-  static bool CompileBuiltin(Isolate* isolate, int index);
-  static bool CompileExperimentalBuiltin(Isolate* isolate, int index);
-  static bool CompileExtraBuiltin(Isolate* isolate, int index);
-  static bool CompileNative(Isolate* isolate, Vector<const char> name,
-                            Handle<String> source, int argc,
-                            Handle<Object> argv[]);
-
   static bool CallUtilsFunction(Isolate* isolate, const char* name);
 
   static bool CompileExtension(Isolate* isolate, v8::Extension* extension);