Revert "This is a speculative chain of reverts to improve a Chrome"

src/bootstrapper.h

 // Copyright 2014 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_BOOTSTRAPPER_H_
 #define V8_BOOTSTRAPPER_H_
 
 #include "src/factory.h"
 
 namespace v8 {
@@ skipping 98 matching lines @@
   // Used for new context creation.
   bool InstallExtensions(Handle<Context> native_context,
                          v8::ExtensionConfiguration* extensions);
 
   SourceCodeCache* extensions_cache() { return &extensions_cache_; }
 
   static bool CompileNative(Isolate* isolate, Vector<const char> name,
                             Handle<String> source, int argc,
                             Handle<Object> argv[], NativesFlag natives_flag);
   static bool CompileBuiltin(Isolate* isolate, int index);
-  static bool CompileExperimentalBuiltin(Isolate* isolate, int index);
   static bool CompileExtraBuiltin(Isolate* isolate, int index);
   static bool CompileExperimentalExtraBuiltin(Isolate* isolate, int index);
 
   static void ExportFromRuntime(Isolate* isolate, Handle<JSObject> container);
 
  private:
   Isolate* isolate_;
   typedef int NestingCounterType;
   NestingCounterType nesting_;
   SourceCodeCache extensions_cache_;
@@ skipping 43 matching lines @@
 
  private:
   const char* data_;
   size_t length_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BOOTSTRAPPER_H_