Add a unique frame id and save it on HistoryItem.

Source/core/fetch/ImageResourceTest.cpp

Index: Source/core/fetch/ImageResourceTest.cpp
diff --git a/Source/core/fetch/ImageResourceTest.cpp b/Source/core/fetch/ImageResourceTest.cpp
index e734febd4ce457d3ff36ecbc56f08d5ebbdf0918..2949e32a3710a0cb757f6d3b6f5e465cb23955bf 100644
--- a/Source/core/fetch/ImageResourceTest.cpp
+++ b/Source/core/fetch/ImageResourceTest.cpp
@@ -126,7 +126,7 @@ TEST(ImageResourceTest, CancelOnDetach)
     fillWithEmptyClients(pageClients);
     EmptyFrameLoaderClient frameLoaderClient;
     Page page(pageClients);
-    RefPtr<Frame> frame = Frame::create(&page, 0, &frameLoaderClient);
+    RefPtr<Frame> frame = Frame::create(FrameInit::create(0, &page, &frameLoaderClient));
     frame->setView(FrameView::create(frame.get()));
     frame->init();
     RefPtr<DocumentLoader> documentLoader = DocumentLoader::create(ResourceRequest(testURL), SubstituteData());