Move out DidStartProvisionalLoad from WebContentsImpl into Navigator.

content/browser/frame_host/navigation_controller_delegate.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_DELEGATE_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_DELEGATE_H_
 
 #include <string>
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_details.h"
 
 namespace content {
 
 struct LoadCommittedDetails;
 struct LoadNotificationDetails;
 struct NativeWebKeyboardEvent;
 class InterstitialPage;
 class InterstitialPageImpl;
+class RenderFrameHost;
 class RenderViewHost;
 class SiteInstance;
 class WebContents;
 class WebContentsDelegate;
 
 // Interface for objects embedding a NavigationController to provide the
 // functionality NavigationController needs.
 // TODO(nasko): This interface should exist for short amount of time, while
 // we transition navigation code from WebContents to Navigator.
 class NavigationControllerDelegate {
@@ skipping 36 matching lines @@
   // Methods needed by InterstitialPageImpl.
   virtual bool IsHidden() = 0;
   virtual void RenderViewForInterstitialPageCreated(
       RenderViewHost* render_view_host) = 0;
   virtual void AttachInterstitialPage(
       InterstitialPageImpl* interstitial_page) = 0;
   virtual void DetachInterstitialPage() = 0;
   virtual void SetIsLoading(RenderViewHost* render_view_host,
                             bool is_loading,
                             LoadNotificationDetails* details) = 0;
+
+  // Actual navigation delegates.

[Charlie Reis, 2013/11/07 01:22:43]

What does this mean?

+  virtual void DidStartProvisionalLoad(
+      int64 frame_id,
+      int64 parent_frame_id,
+      bool is_main_frame,
+      const GURL& validated_url,
+      bool is_error_page,
+      bool is_iframe_srcdoc,
+      RenderFrameHost* render_frame_host) = 0;
+  virtual void ProvisionalChangeToMainFrameUrl(
+      const GURL& url,
+      RenderFrameHost* render_frame_host) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_DELEGATE_H_