DevTools: show HTTP headers of cached resources in network panel.

Source/core/inspector/InspectorResourceAgent.cpp

 /*
  * Copyright (C) 2011 Google Inc. 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
@@ skipping 224 matching lines @@
     double status;
     String statusText;
     if (response.resourceLoadInfo() && response.resourceLoadInfo()->httpStatusCode) {
         status = response.resourceLoadInfo()->httpStatusCode;
         statusText = response.resourceLoadInfo()->httpStatusText;
     } else {
         status = response.httpStatusCode();
         statusText = response.httpStatusText();
     }
     RefPtr<JSONObject> headers;
-    if (response.resourceLoadInfo())
+    if (response.resourceLoadInfo() && response.resourceLoadInfo()->responseHeaders.size())
         headers = buildObjectForHeaders(response.resourceLoadInfo()->responseHeaders);
     else
         headers = buildObjectForHeaders(response.httpHeaderFields());
 
     int64_t encodedDataLength = response.resourceLoadInfo() ? response.resourceLoadInfo()->encodedDataLength : -1;
 
     RefPtr<TypeBuilder::Network::Response> responseObject = TypeBuilder::Network::Response::create()
         .setUrl(urlWithoutFragment(response.url()).string())
         .setStatus(status)
         .setStatusText(statusText)
         .setHeaders(headers)
         .setMimeType(response.mimeType())
         .setConnectionReused(response.connectionReused())
         .setConnectionId(response.connectionID())
         .setEncodedDataLength(encodedDataLength);
 
     responseObject->setFromDiskCache(response.wasCached());
     if (response.resourceLoadTiming())
         responseObject->setTiming(buildObjectForTiming(*response.resourceLoadTiming(), loader));
 
     if (response.resourceLoadInfo()) {
         if (!response.resourceLoadInfo()->responseHeadersText.isEmpty())
             responseObject->setHeadersText(response.resourceLoadInfo()->responseHeadersText);
-
-        responseObject->setRequestHeaders(buildObjectForHeaders(response.resourceLoadInfo()->requestHeaders));
+        if (response.resourceLoadInfo()->requestHeaders.size())
+            responseObject->setRequestHeaders(buildObjectForHeaders(response.resourceLoadInfo()->requestHeaders));
         if (!response.resourceLoadInfo()->requestHeadersText.isEmpty())
             responseObject->setRequestHeadersText(response.resourceLoadInfo()->requestHeadersText);
     }
 
     AtomicString remoteIPAddress = response.remoteIPAddress();
     if (!remoteIPAddress.isEmpty()) {
         responseObject->setRemoteIPAddress(remoteIPAddress);
         responseObject->setRemotePort(response.remotePort());
     }
 
@@ skipping 531 matching lines @@
 InspectorResourceAgent::InspectorResourceAgent(InspectorPageAgent* pageAgent)
     : InspectorBaseAgent<InspectorResourceAgent>("Network")
     , m_pageAgent(pageAgent)
     , m_frontend(0)
     , m_resourcesData(adoptPtr(new NetworkResourcesData()))
     , m_isRecalculatingStyle(false)
 {
 }
 
 } // namespace WebCore