Have Frame::loader() return a reference

Source/web/WebPluginContainerImpl.cpp

Index: Source/web/WebPluginContainerImpl.cpp
diff --git a/Source/web/WebPluginContainerImpl.cpp b/Source/web/WebPluginContainerImpl.cpp
index 618939f463ab20642b4981249e080b9b9cf0d9e6..195399a9e2d7da12106f8a17f3a63ef22ff5fefb 100644
--- a/Source/web/WebPluginContainerImpl.cpp
+++ b/Source/web/WebPluginContainerImpl.cpp
@@ -453,7 +453,7 @@ WebString WebPluginContainerImpl::executeScriptURL(const WebURL& url, bool popup
 void WebPluginContainerImpl::loadFrameRequest(const WebURLRequest& request, const WebString& target, bool notifyNeeded, void* notifyData)
 {
     Frame* frame = m_element->document().frame();
-    if (!frame || !frame->loader()->documentLoader())
+    if (!frame || !frame->loader().documentLoader())
         return;  // FIXME: send a notification in this case?
 
     if (notifyNeeded) {
@@ -468,7 +468,7 @@ void WebPluginContainerImpl::loadFrameRequest(const WebURLRequest& request, cons
 
     FrameLoadRequest frameRequest(frame->document()->securityOrigin(), request.toResourceRequest(), target);
     UserGestureIndicator gestureIndicator(request.hasUserGesture() ? DefinitelyProcessingNewUserGesture : PossiblyProcessingUserGesture);
-    frame->loader()->load(frameRequest);
+    frame->loader().load(frameRequest);
 }
 
 void WebPluginContainerImpl::zoomLevelChanged(double zoomLevel)