[NotLanded] Implement the fetching algorithm of the Web Manifest.

Source/core/testing/DummyPageHolder.h

 /*
  * Copyright (c) 2013, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef DummyPageHolder_h
 #define DummyPageHolder_h
 
-#include "core/loader/EmptyClients.h"
+#include "core/loader/FrameLoaderClient.h"
 #include "core/page/Page.h"
 #include "platform/geometry/IntSize.h"
 #include "platform/heap/Handle.h"
 #include "wtf/FastAllocBase.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
 class Document;
 class LocalFrame;
 class FrameView;
 class IntSize;
 
 // Creates a dummy Page, LocalFrame, and FrameView whose clients are all no-op.
 //
 // This class can be used when you write unit tests for components which do not work correctly without renderers.
 // To make sure the renderers are created, you need to call |frameView().layout()| after you add nodes into
 // |document()|.
 //
 // Since DummyPageHolder stores empty clients in it, it must outlive the Page, LocalFrame, FrameView and any other objects
 // created by it. DummyPageHolder's destructor ensures this condition by checking remaining references to the LocalFrame.
 
 class DummyPageHolder {
     WTF_MAKE_NONCOPYABLE(DummyPageHolder);
     WTF_MAKE_FAST_ALLOCATED;
 public:
-    static PassOwnPtr<DummyPageHolder> create(const IntSize& initialViewSize = IntSize(), Page::PageClients* = 0);
+    static PassOwnPtr<DummyPageHolder> create(
+        const IntSize& initialViewSize = IntSize(),
+        Page::PageClients* = 0,
+        PassOwnPtr<FrameLoaderClient> = PassOwnPtr<FrameLoaderClient>());
     ~DummyPageHolder();
 
     Page& page() const;
     LocalFrame& frame() const;
     FrameView& frameView() const;
     Document& document() const;
 
 private:
-    explicit DummyPageHolder(const IntSize& initialViewSize, Page::PageClients*);
+    explicit DummyPageHolder(
+        const IntSize& initialViewSize,
+        Page::PageClients*,
+        PassOwnPtr<FrameLoaderClient>);
 
     OwnPtrWillBePersistent<Page> m_page;
     RefPtr<LocalFrame> m_frame;
 
     Page::PageClients m_pageClients;
-    EmptyFrameLoaderClient m_frameLoaderClient;
+    OwnPtr<FrameLoaderClient> m_frameLoaderClient;
 };
 
 } // namespace blink
 
 #endif // DummyPageHolder_h