Store embed-script flag as metadata into snapshot blob.

src/api.cc

 // 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.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 211 matching lines @@
 
 StartupData V8::CreateSnapshotDataBlob(char* custom_source) {
   Isolate::CreateParams params;
   params.enable_serializer = true;
   Isolate* isolate = v8::Isolate::New(params);
   StartupData result = {NULL, 0};
   {
     Isolate::Scope isolate_scope(isolate);
     i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
     Persistent<Context> context;
+    i::Snapshot::Metadata metadata;
     {
       HandleScope handle_scope(isolate);
       Handle<Context> new_context = Context::New(isolate);
       context.Reset(isolate, new_context);
       if (custom_source != NULL) {
+        metadata.set_embeds_script(true);
         Context::Scope context_scope(new_context);
         if (!RunExtraCode(isolate, custom_source)) context.Reset();
       }
     }
     if (!context.IsEmpty()) {
       // Make sure all builtin scripts are cached.
       {
         HandleScope scope(isolate);
         for (int i = 0; i < i::Natives::GetBuiltinsCount(); i++) {
           internal_isolate->bootstrapper()->NativesSourceLookup(i);
@@ skipping 10 matching lines @@
       ser.SerializeStrongReferences();
 
       i::SnapshotByteSink context_sink;
       i::PartialSerializer context_ser(internal_isolate, &ser, &context_sink);
       context_ser.Serialize(&raw_context);
       ser.SerializeWeakReferences();
 
       i::SnapshotData sd(snapshot_sink, ser);
       i::SnapshotData csd(context_sink, context_ser);
 
-      result = i::Snapshot::CreateSnapshotBlob(sd.RawData(), csd.RawData());
+      result = i::Snapshot::CreateSnapshotBlob(sd.RawData(), csd.RawData(),
+                                               metadata);
     }
   }
   isolate->Dispose();
   return result;
 }
 
 
 void V8::SetFlagsFromString(const char* str, int length) {
   i::FlagList::SetFlagsFromString(str, length);
 }
@@ skipping 7353 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 } }  // namespace v8::internal