Remove WebContents::IsActiveEntry from Instant Extended and from WebContents.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 6ed02ce9fe313491114cffcedede6a9f14b08ea0..a3f67e585091340a99f779beaad63cc8083e5d8d 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -2065,15 +2065,6 @@ void WebContentsImpl::GenerateMHTML(
   MHTMLGenerationManager::GetInstance()->SaveMHTML(this, file, callback);
 }
 
-// TODO(nasko): Rename this method to IsVisibleEntry.
-bool WebContentsImpl::IsActiveEntry(int32 page_id) {
-  NavigationEntryImpl* visible_entry =
-      NavigationEntryImpl::FromNavigationEntry(controller_.GetVisibleEntry());
-  return (visible_entry != NULL &&
-          visible_entry->site_instance() == GetSiteInstance() &&
-          visible_entry->GetPageID() == page_id);
-}
-
 const std::string& WebContentsImpl::GetContentsMimeType() const {
   return contents_mime_type_;
 }