Introducing the WebServiceWorkerCache.

Source/platform/exported/WebServiceWorkerResponse.cpp

Index: Source/platform/exported/WebServiceWorkerResponse.cpp
diff --git a/Source/platform/exported/WebServiceWorkerResponse.cpp b/Source/platform/exported/WebServiceWorkerResponse.cpp
index e3f2e6a4f81ce9c8b383a86fb498e5d0a27a2bf8..4512b0d49093f00c981ceef74e693e06368a9289 100644
--- a/Source/platform/exported/WebServiceWorkerResponse.cpp
+++ b/Source/platform/exported/WebServiceWorkerResponse.cpp
@@ -6,6 +6,7 @@
 #include "public/platform/WebServiceWorkerResponse.h"
 
 #include "platform/blob/BlobData.h"
+#include "public/platform/WebHTTPHeaderVisitor.h"
 
 namespace blink {
 
@@ -80,6 +81,12 @@ WebString WebServiceWorkerResponse::getHeader(const WebString& key) const
     return m_private->headers.get(key);
 }
 
+void WebServiceWorkerResponse::visitHTTPHeaderFields(WebHTTPHeaderVisitor* headerVisitor) const
+{
+    for (HashMap<String, String>::const_iterator i = m_private->headers.begin(), end = m_private->headers.end(); i != end; ++i)
+        headerVisitor->visitHeader(i->key, i->value);
+}
+
 WebString WebServiceWorkerResponse::blobUUID() const
 {
     if (!m_private->blobDataHandle)