Correctly record and pass around navigation start time.

components/html_viewer/html_frame.h

Index: components/html_viewer/html_frame.h
diff --git a/components/html_viewer/html_frame.h b/components/html_viewer/html_frame.h
index 2003bcc5ba754a8cd020f8879d421bbdb4db94fe..4e4a1285030365d91cad8c6d3eb56a0d659f6f35 100644
--- a/components/html_viewer/html_frame.h
+++ b/components/html_viewer/html_frame.h
@@ -9,6 +9,7 @@
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/time/time.h"
 #include "cc/layers/surface_layer.h"
 #include "components/html_viewer/html_frame_tree_manager.h"
 #include "components/html_viewer/replicated_frame_state.h"
@@ -147,7 +148,8 @@ class HTMLFrame : public blink::WebFrameClient,
   // Returns true if this or one of the frames descendants is local.
   bool HasLocalDescendant() const;
 
-  void LoadRequest(const blink::WebURLRequest& request);
+  void LoadRequest(const blink::WebURLRequest& request,
+                   base::TimeTicks navigation_start_time);
 
  protected:
   virtual ~HTMLFrame();
@@ -276,6 +278,7 @@ class HTMLFrame : public blink::WebFrameClient,
                  uint32_t view_id,
                  web_view::mojom::ViewConnectType view_connect_type,
                  mojo::Array<web_view::mojom::FrameDataPtr> frame_data,
+                 int64_t navigation_start_time_ticks,
                  const OnConnectCallback& callback) override;
   void OnFrameAdded(uint32_t change_id,
                     web_view::mojom::FrameDataPtr frame_data) override;
@@ -361,6 +364,8 @@ class HTMLFrame : public blink::WebFrameClient,
   // received response to it.
   bool pending_navigation_;
 
+  base::TimeTicks navigation_start_time_;
+
   base::WeakPtrFactory<HTMLFrame> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HTMLFrame);