[serializer] include global proxy in additional context snapshots.

test/cctest/cctest.h

 // Copyright 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 522 matching lines @@
   v8::Local<v8::Value> result = CompileRun(code);
   CHECK(result->IsUndefined());
 }
 
 
 static inline void ExpectNull(const char* code) {
   v8::Local<v8::Value> result = CompileRun(code);
   CHECK(result->IsNull());
 }
 
+static inline void ExpectException(const char* code) {
+  v8::TryCatch try_catch;
+  CHECK(CompileRun(code).IsEmpty());
+  CHECK(try_catch.HasCaught());
+}
 
 static inline void CheckDoubleEquals(double expected, double actual) {
   const double kEpsilon = 1e-10;
   CHECK_LE(expected, actual + kEpsilon);
   CHECK_GE(expected, actual - kEpsilon);
 }
 
 
 static void DummyDebugEventListener(
     const v8::Debug::EventDetails& event_details) {}
@@ skipping 38 matching lines @@
 
   // Prefixing the below with main_ reduces a lot of naming clashes.
   i::Zone* main_zone() { return main_zone_.get(); }
 
  private:
   v8::internal::AccountingAllocator allocator_;
   std::unique_ptr<i::Zone> main_zone_;
 };
 
 #endif  // ifndef CCTEST_H_