Teach window.location.href setter to handle relative urls.

sky/engine/core/frame/LocalDOMWindow.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 685 matching lines @@
 }
 
 void LocalDOMWindow::setLocation(const String& urlString, SetLocationLocking locking)
 {
     if (!m_frame)
         return;
     FrameHost* host = m_frame->host();
     if (!host)
         return;
     mojo::URLRequestPtr request = mojo::URLRequest::New();
-    request->url = urlString.toUTF8();
+    request->url = document()->completeURL(urlString).string().toUTF8();
     host->services()->NavigatorHost()->RequestNavigate(
         mojo::TARGET_SOURCE_NODE, request.Pass());
 }
 
 void LocalDOMWindow::printErrorMessage(const String& message)
 {
     if (message.isEmpty())
         return;
 
     frameConsole()->addMessage(ConsoleMessage::create(JSMessageSource, ErrorMessageLevel, message));
@@ skipping 10 matching lines @@
 {
     return static_cast<DOMWindowLifecycleNotifier&>(LifecycleContext<LocalDOMWindow>::lifecycleNotifier());
 }
 
 PassOwnPtr<LifecycleNotifier<LocalDOMWindow> > LocalDOMWindow::createLifecycleNotifier()
 {
     return DOMWindowLifecycleNotifier::create(this);
 }
 
 } // namespace blink