Revert 138962

Source/WebCore/platform/network/qt/ResourceHandleQt.cpp

Index: Source/WebCore/platform/network/qt/ResourceHandleQt.cpp
===================================================================
--- Source/WebCore/platform/network/qt/ResourceHandleQt.cpp	(revision 141117)
+++ Source/WebCore/platform/network/qt/ResourceHandleQt.cpp	(working copy)
@@ -125,6 +125,30 @@
     return false;
 }
 
+bool ResourceHandle::willLoadFromCache(ResourceRequest& request, Frame* frame)
+{
+    if (!frame)
+        return false;
+
+    QNetworkAccessManager* manager = 0;
+    QAbstractNetworkCache* cache = 0;
+    if (frame->loader()->networkingContext()) {
+        manager = frame->loader()->networkingContext()->networkAccessManager();
+        cache = manager->cache();
+    }
+
+    if (!cache)
+        return false;
+
+    QNetworkCacheMetaData data = cache->metaData(request.url());
+    if (data.isValid()) {
+        request.setCachePolicy(ReturnCacheDataDontLoad);
+        return true;
+    }
+
+    return false;
+}
+
 void ResourceHandle::loadResourceSynchronously(NetworkingContext* context, const ResourceRequest& request, StoredCredentials /*storedCredentials*/, ResourceError& error, ResourceResponse& response, Vector<char>& data)
 {
 #if ENABLE(BLOB)