Roll DEPS for v8 to 820a23aa.

fxjse/context.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "fxjse/context.h"
 
 #include "fxjse/include/cfxjse_class.h"
 #include "fxjse/include/cfxjse_value.h"
@@ skipping 123 matching lines @@
     lpGlobalClassObj = CFXJSE_Class::Create(pContext, lpGlobalClass, TRUE);
     ASSERT(lpGlobalClassObj);
     v8::Local<v8::FunctionTemplate> hFunctionTemplate =
         v8::Local<v8::FunctionTemplate>::New(pIsolate,
                                              lpGlobalClassObj->m_hTemplate);
     hObjectTemplate = hFunctionTemplate->InstanceTemplate();
   } else {
     hObjectTemplate = v8::ObjectTemplate::New(pIsolate);
     hObjectTemplate->SetInternalFieldCount(1);
   }
+  hObjectTemplate->Set(
+      v8::Symbol::GetToStringTag(pIsolate),
+      v8::String::NewFromUtf8(pIsolate, "global", v8::NewStringType::kNormal)
+          .ToLocalChecked());
   v8::Local<v8::Context> hNewContext =
       v8::Context::New(pIsolate, NULL, hObjectTemplate);
   v8::Local<v8::Context> hRootContext = v8::Local<v8::Context>::New(
       pIsolate, CFXJSE_RuntimeData::Get(pIsolate)->m_hRootContext);
   hNewContext->SetSecurityToken(hRootContext->GetSecurityToken());
   v8::Local<v8::Object> hGlobalObject =
       FXJSE_GetGlobalObjectFromContext(hNewContext);
   FXJSE_UpdateObjectBinding(hGlobalObject, lpGlobalObject);
   pContext->m_hContext.Reset(pIsolate, hNewContext);
   return pContext;
@@ skipping 63 matching lines @@
         return TRUE;
       }
     }
     if (lpRetValue) {
       lpRetValue->m_hValue.Reset(m_pIsolate,
                                  FXJSE_CreateReturnValue(m_pIsolate, trycatch));
     }
     return FALSE;
   }
 }