Move out DidStartProvisionalLoad from WebContentsImpl into Navigator.

content/browser/frame_host/render_frame_host_factory.cc

Index: content/browser/frame_host/render_frame_host_factory.cc
diff --git a/content/browser/frame_host/render_frame_host_factory.cc b/content/browser/frame_host/render_frame_host_factory.cc
index 8e9215c33a5d5427a37807df3b690d222660ea99..f491f04ad36251d4789f18086f3b14bc1474a985 100644
--- a/content/browser/frame_host/render_frame_host_factory.cc
+++ b/content/browser/frame_host/render_frame_host_factory.cc
@@ -5,6 +5,7 @@
 #include "content/browser/frame_host/render_frame_host_factory.h"
 
 #include "base/logging.h"
+#include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 
 namespace content {
@@ -16,16 +17,19 @@ RenderFrameHostFactory* RenderFrameHostFactory::factory_ = NULL;
 scoped_ptr<RenderFrameHostImpl> RenderFrameHostFactory::Create(
     RenderViewHostImpl* render_view_host,
     FrameTree* frame_tree,
+    FrameTreeNode* frame_tree_node,
     int routing_id,
     bool is_swapped_out) {
   if (factory_) {
     return factory_->CreateRenderFrameHost(render_view_host,
                                            frame_tree,
+                                           frame_tree_node,
                                            routing_id,
                                            is_swapped_out).Pass();
   }
   return make_scoped_ptr(new RenderFrameHostImpl(
-      render_view_host, frame_tree, routing_id, is_swapped_out));
+      render_view_host, frame_tree, frame_tree_node, routing_id,
+      is_swapped_out));
 }
 
 // static