[snapshot] Move builtins generation into mksnapshot

src/api.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_API_H_
 #define V8_API_H_
 
 #include "include/v8-testing.h"
 #include "src/contexts.h"
 #include "src/debug/debug-interface.h"
@@ skipping 329 matching lines @@
            (*reinterpret_cast<v8::internal::Object* const*>(that))->Is##To()); \
     return v8::internal::Handle<v8::internal::To>(                             \
         reinterpret_cast<v8::internal::To**>(const_cast<v8::From*>(that)));    \
   }
 
 OPEN_HANDLE_LIST(MAKE_OPEN_HANDLE)
 
 #undef MAKE_OPEN_HANDLE
 #undef OPEN_HANDLE_LIST
 
+extern Isolate* IsolateNewImpl(internal::Isolate* isolate,
+                               const Isolate::CreateParams& params);
 
 namespace internal {
 
 class V8_EXPORT_PRIVATE DeferredHandles {
  public:
   ~DeferredHandles();
 
  private:
   DeferredHandles(Object** first_block_limit, Isolate* isolate)
       : next_(NULL),
@@ skipping 278 matching lines @@
 #endif
     if (spare_ != NULL) {
       DeleteArray(spare_);
     }
     spare_ = block_start;
   }
   DCHECK((blocks_.is_empty() && prev_limit == NULL) ||
          (!blocks_.is_empty() && prev_limit != NULL));
 }
 
-
 // Interceptor functions called from generated inline caches to notify
 // CPU profiler that external callbacks are invoked.
 void InvokeAccessorGetterCallback(
     v8::Local<v8::Name> property,
     const v8::PropertyCallbackInfo<v8::Value>& info,
     v8::AccessorNameGetterCallback getter);
 
 void InvokeFunctionCallback(const v8::FunctionCallbackInfo<v8::Value>& info,
                             v8::FunctionCallback callback);
 
 class Testing {
  public:
   static v8::Testing::StressType stress_type() { return stress_type_; }
   static void set_stress_type(v8::Testing::StressType stress_type) {
     stress_type_ = stress_type;
   }
 
  private:
   static v8::Testing::StressType stress_type_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_API_H_