ServiceWorker: support Request.{url,method,origin,headers} [blink] (1/3)

Source/modules/serviceworkers/HeaderMap.cpp

Index: Source/modules/serviceworkers/HeaderMap.cpp
diff --git a/Source/modules/serviceworkers/HeaderMap.cpp b/Source/modules/serviceworkers/HeaderMap.cpp
index c5d3dfb54a481fe6ca03af7c15a2f5129ec30b49..41c67f91438ec371f34dbd045ee908223c1edce1 100644
--- a/Source/modules/serviceworkers/HeaderMap.cpp
+++ b/Source/modules/serviceworkers/HeaderMap.cpp
@@ -18,6 +18,11 @@ PassRefPtr<HeaderMap> HeaderMap::create()
     return adoptRef(new HeaderMap);
 }
 
+PassRefPtr<HeaderMap> HeaderMap::create(const HashMap<String, String>& headers)
+{
+    return adoptRef(new HeaderMap(headers));
+}
+
 unsigned long HeaderMap::size() const
 {
     return m_headers.size();
@@ -66,6 +71,12 @@ HeaderMap::HeaderMap()
     ScriptWrappable::init(this);
 }
 
+HeaderMap::HeaderMap(const HashMap<String, String>& headers)
+    : m_headers(headers)
+{
+    ScriptWrappable::init(this);
+}
+
 void HeaderMap::forEachInternal(PassOwnPtr<HeaderMapForEachCallback> callback, ScriptValue* thisArg)
 {
     TrackExceptionState exceptionState;