Move out DidStartProvisionalLoad from WebContentsImpl into Navigator.

BUG=304341

Review URL: https://codereview.chromium.org/26316005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239683 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index 79bfc23..04719d7 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -300,12 +300,6 @@
                                     base::TerminationStatus status,
                                     int error_code) OVERRIDE;
   virtual void RenderViewDeleted(RenderViewHost* render_view_host) OVERRIDE;
-  virtual void DidStartProvisionalLoadForFrame(
-      RenderViewHost* render_view_host,
-      int64 frame_id,
-      int64 parent_frame_id,
-      bool main_frame,
-      const GURL& url) OVERRIDE;
   virtual void DidRedirectProvisionalLoad(
       RenderViewHost* render_view_host,
       int32 page_id,
@@ -440,6 +434,19 @@
       SiteInstance* instance) OVERRIDE;
   virtual FrameTree* GetFrameTree() OVERRIDE;
 
+  // NavigatorDelegate ---------------------------------------------------------
+
+  virtual void DidStartProvisionalLoad(
+      RenderFrameHostImpl* render_frame_host,
+      int64 frame_id,
+      int64 parent_frame_id,
+      bool is_main_frame,
+      const GURL& validated_url,
+      bool is_error_page,
+      bool is_iframe_srcdoc) OVERRIDE;
+  virtual void NotifyChangedNavigationState(
+      InvalidateTypes changed_flags) OVERRIDE;
+
   // RenderWidgetHostDelegate --------------------------------------------------
 
   virtual void RenderWidgetDeleted(