fix nosnapshot test failure in 14793004, do not deprecate function

src/mksnapshot.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 310 matching lines @@
   }
 #ifdef COMPRESS_STARTUP_DATA_BZ2
   BZip2Decompressor natives_decompressor;
   int bz2_result = natives_decompressor.Decompress();
   if (bz2_result != BZ_OK) {
     fprintf(stderr, "bzip error code: %d\n", bz2_result);
     exit(1);
   }
 #endif
   i::Serializer::Enable();
-  Persistent<Context> context = v8::Context::New();
+  Isolate* isolate = Isolate::GetCurrent();
+  Persistent<Context> context;
+  {
+    HandleScope handle_scope(isolate);
+    context.Reset(isolate, Context::New(isolate));
+  }
+
   if (context.IsEmpty()) {
     fprintf(stderr,
             "\nException thrown while compiling natives - see above.\n\n");
     exit(1);
   }
-  Isolate* isolate = context->GetIsolate();
   if (i::FLAG_extra_code != NULL) {
     context->Enter();
     // Capture 100 frames if anything happens.
     V8::SetCaptureStackTraceForUncaughtExceptions(true, 100);
     HandleScope scope(isolate);
     const char* name = i::FLAG_extra_code;
     FILE* file = i::OS::FOpen(name, "rb");
     if (file == NULL) {
       fprintf(stderr, "Failed to open '%s': errno %d\n", name, errno);
       exit(1);
@@ skipping 73 matching lines @@
   sink.WriteSpaceUsed(
       "",
       ser.CurrentAllocationAddress(i::NEW_SPACE),
       ser.CurrentAllocationAddress(i::OLD_POINTER_SPACE),
       ser.CurrentAllocationAddress(i::OLD_DATA_SPACE),
       ser.CurrentAllocationAddress(i::CODE_SPACE),
       ser.CurrentAllocationAddress(i::MAP_SPACE),
       ser.CurrentAllocationAddress(i::CELL_SPACE));
   return 0;
 }