Create FrameNavigationEntries for the initial blank page in subframes.

content/browser/frame_host/navigation_controller_impl.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
@@ skipping 102 matching lines @@
 
   // Return the entry with the corresponding instance and page_id, or null if
   // not found.
   NavigationEntryImpl* GetEntryWithPageID(
       SiteInstance* instance,
       int32 page_id) const;
 
   // Return the entry with the given unique id, or null if not found.
   NavigationEntryImpl* GetEntryWithUniqueID(int nav_entry_id) const;
 
-  // Whether the given frame has committed any navigations yet.
-  // This currently only returns true in --site-per-process mode.
-  // TODO(creis): Create FrameNavigationEntries by default so this always works.
-  bool HasCommittedRealLoad(FrameTreeNode* frame_tree_node) const;
-
   NavigationControllerDelegate* delegate() const {
     return delegate_;
   }
 
   // For use by WebContentsImpl ------------------------------------------------
 
   // Allow renderer-initiated navigations to create a pending entry when the
   // provisional load starts.
   void SetPendingEntry(scoped_ptr<NavigationEntryImpl> entry);
 
@@ skipping 307 matching lines @@
   TimeSmoother time_smoother_;
 
   scoped_ptr<NavigationEntryScreenshotManager> screenshot_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationControllerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_