Remove WebHistoryItem child usage

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index e66d313516fc459028f61da83cb9b3cf9212fe5c..e87990670b8c47c36ae2c764dfd71d8ecd1de705 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -1385,21 +1385,19 @@ void RenderViewImpl::UpdateSessionHistory(WebFrame* frame) {
   // there is no past session history to record.
   if (page_id_ == -1)
     return;
-
-  WebHistoryItem item = history_controller_->GetPreviousItemForExport();
-  SendUpdateState(item);
+  SendUpdateState(history_controller_->GetPreviousEntry());
 }
 
-void RenderViewImpl::SendUpdateState(const WebHistoryItem& item) {
-  if (item.isNull())
+void RenderViewImpl::SendUpdateState(HistoryEntry* entry) {
+  if (!entry)
     return;
 
   // Don't send state updates for kSwappedOutURL.
-  if (item.urlString() == WebString::fromUTF8(kSwappedOutURL))
+  if (entry->root().urlString() == WebString::fromUTF8(kSwappedOutURL))
     return;
 
   Send(new ViewHostMsg_UpdateState(
-      routing_id_, page_id_, HistoryItemToPageState(item)));
+      routing_id_, page_id_, HistoryEntryToPageState(entry)));
 }
 
 // WebViewDelegate ------------------------------------------------------------
@@ -2719,9 +2717,7 @@ void RenderViewImpl::PlayerGone(blink::WebMediaPlayer* player) {
 void RenderViewImpl::SyncNavigationState() {
   if (!webview())
     return;
-
-  WebHistoryItem item = history_controller_->GetCurrentItemForExport();
-  SendUpdateState(item);
+  SendUpdateState(history_controller_->GetCurrentEntry());
 }
 
 GURL RenderViewImpl::GetLoadingUrl(blink::WebFrame* frame) const {