Move out DidStartProvisionalLoad from WebContentsImpl into Navigator.

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index c1fbc30751fa6b22f331fc66ac17e5ffbdd316de..3a6791000aaa3343efdf4128b9df85df1bae17bd 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -7,10 +7,12 @@
 #include "base/containers/hash_tables.h"
 #include "base/lazy_instance.h"
 #include "content/browser/frame_host/frame_tree.h"
+#include "content/browser/frame_host/navigator.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/common/frame_messages.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
+#include "content/public/browser/site_instance.h"
 #include "url/gurl.h"
 
 namespace content {
@@ -34,10 +36,12 @@ RenderFrameHostImpl* RenderFrameHostImpl::FromID(
 RenderFrameHostImpl::RenderFrameHostImpl(
     RenderViewHostImpl* render_view_host,
     FrameTree* frame_tree,
+    Navigator* navigator,
     int routing_id,
     bool is_swapped_out)
     : render_view_host_(render_view_host),
       frame_tree_(frame_tree),
+      navigator_(navigator),
       routing_id_(routing_id),
       is_swapped_out_(is_swapped_out) {
   GetProcess()->AddRoute(routing_id_, this);
@@ -79,6 +83,13 @@ RenderProcessHost* RenderFrameHostImpl::GetProcess() const {
   return render_view_host_->GetProcess();
 }
 
+SiteInstance* RenderFrameHostImpl::GetSiteInstance() const {
+  // TODO(nasko): This should return the RenderFrameHostImpl's SiteInstance,
+  // but it is not implemented yet, so return the one for the associated
+  // RenderViewHost.
+  return render_view_host_->GetSiteInstance();
+}
+
 void RenderFrameHostImpl::OnCreateChildFrame(int new_frame_routing_id,
                                              int64 parent_frame_id,
                                              int64 frame_id,
@@ -96,8 +107,8 @@ void RenderFrameHostImpl::OnDidStartProvisionalLoadForFrame(
     int64 parent_frame_id,
     bool is_main_frame,
     const GURL& url) {
-  render_view_host_->OnDidStartProvisionalLoadForFrame(
-      frame_id, parent_frame_id, is_main_frame, url);
+  navigator_->DidStartProvisionalLoad(
+      this, frame_id, parent_frame_id, is_main_frame, url);
 }
 
 }  // namespace content