| Index: chrome/browser/extensions/api/streams_private/streams_private_api.cc
 | 
| diff --git a/chrome/browser/extensions/api/streams_private/streams_private_api.cc b/chrome/browser/extensions/api/streams_private/streams_private_api.cc
 | 
| index dc12dac808f754a699567fba4e96c960674587f7..21c333a6738cd3106a98121d365946cac210298b 100644
 | 
| --- a/chrome/browser/extensions/api/streams_private/streams_private_api.cc
 | 
| +++ b/chrome/browser/extensions/api/streams_private/streams_private_api.cc
 | 
| @@ -37,9 +37,8 @@ void CreateResponseHeadersDictionary(const net::HttpResponseHeaders* headers,
 | 
|    while (headers->EnumerateHeaderLines(&iter, &header_name, &header_value)) {
 | 
|      base::Value* existing_value = NULL;
 | 
|      if (result->Get(header_name, &existing_value)) {
 | 
| -      base::StringValue* existing_string_value =
 | 
| -          static_cast<base::StringValue*>(existing_value);
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| -      existing_string_value->GetString()->append(", ").append(header_value);
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| +      *existing_value =
 | 
| +          base::Value(existing_value->GetString() + ", " + header_value);
 | 
|      } else {
 | 
|        result->SetString(header_name, header_value);
 | 
|      }
 | 
| 
 |