Fix onBeforeSendHeaders regression: we were sending {name: name} for every

chrome/browser/extensions/extension_webrequest_api.cc

Index: chrome/browser/extensions/extension_webrequest_api.cc
diff --git a/chrome/browser/extensions/extension_webrequest_api.cc b/chrome/browser/extensions/extension_webrequest_api.cc
index 63ddd3e212000e8c0192e2366754e4cb6845e680..19e9f2b83b526e0c49e648dd93cd5779bd98b483 100644
--- a/chrome/browser/extensions/extension_webrequest_api.cc
+++ b/chrome/browser/extensions/extension_webrequest_api.cc
@@ -161,7 +161,7 @@ ListValue* GetRequestHeadersList(const net::HttpRequestHeaders* headers) {
     for (net::HttpRequestHeaders::Iterator it(*headers); it.GetNext(); ) {
       DictionaryValue* header = new DictionaryValue();
       header->SetString(keys::kHeaderNameKey, it.name());
-      header->SetString(keys::kHeaderValueKey, it.name());
+      header->SetString(keys::kHeaderValueKey, it.value());
       headers_value->Append(header);
     }
   }