Correctly record and pass around navigation start time.

components/html_viewer/document_resource_waiter.h

 // Copyright 2015 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 COMPONENTS_HTML_VIEWER_DOCUMENT_RESOURCE_WAITER_H_
 #define COMPONENTS_HTML_VIEWER_DOCUMENT_RESOURCE_WAITER_H_
 
 #include "base/basictypes.h"
+#include "base/time/time.h"
 #include "components/html_viewer/html_frame_tree_manager_observer.h"
 #include "components/mus/public/cpp/view_observer.h"
 #include "components/web_view/public/interfaces/frame.mojom.h"
 #include "mojo/services/network/public/interfaces/url_loader.mojom.h"
 #include "third_party/mojo/src/mojo/public/cpp/bindings/binding.h"
 
 namespace mojo {
 class View;
 }
 
@@ skipping 25 matching lines @@
                web_view::mojom::ViewConnectType* view_connect_type,
                OnConnectCallback* on_connect_callback);
 
   uint32_t change_id() const { return change_id_; }
 
   mojo::URLResponsePtr ReleaseURLResponse();
 
   // See class description.
   bool is_ready() const { return is_ready_; }
 
+  base::TimeTicks navigation_start_time() const {
+    return navigation_start_time_;
+  }
+
   void SetRoot(mus::View* root);
   mus::View* root() { return root_; }
 
   void Bind(mojo::InterfaceRequest<web_view::mojom::FrameClient> request);
 
  private:
   // Updates |is_ready_|, and if ready starts the Load() in the document.
   void UpdateIsReady();
 
   // web_view::mojom::FrameClient:
   void OnConnect(web_view::mojom::FramePtr frame,
                  uint32_t change_id,
                  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;
   void OnFrameRemoved(uint32_t change_id, uint32_t frame_id) override;
   void OnFrameClientPropertyChanged(uint32_t frame_id,
                                     const mojo::String& name,
                                     mojo::Array<uint8_t> new_value) override;
   void OnPostMessageEvent(uint32_t source_frame_id,
                           uint32_t target_frame_id,
                           web_view::mojom::HTMLMessageEventPtr event) override;
@@ skipping 22 matching lines @@
   void OnHTMLFrameTreeManagerDestroyed() override;
 
   GlobalState* global_state_;
   HTMLDocument* document_;
   mojo::URLResponsePtr response_;
   mus::View* root_;
   web_view::mojom::FramePtr frame_;
   mojo::Array<web_view::mojom::FrameDataPtr> frame_data_;
   uint32_t change_id_;
   uint32_t view_id_;
+  base::TimeTicks navigation_start_time_;
   web_view::mojom::ViewConnectType view_connect_type_;
   OnConnectCallback on_connect_callback_;
 
   // Once we get OnConnect() we unbind |frame_client_binding_| and put it here.
   mojo::InterfaceRequest<web_view::mojom::FrameClient> frame_client_request_;
   mojo::Binding<web_view::mojom::FrameClient> frame_client_binding_;
 
   bool is_ready_;
 
   // See comments in UpdateIsReady() for details of this.
   //
   // While |waiting_for_change_id_| is true DocumentResourceWaiter is an
   // HTMLFrameTreeManagerObserver on |target_frame_tree_|.
   bool waiting_for_change_id_;
 
   HTMLFrameTreeManager* target_frame_tree_;
 
   DISALLOW_COPY_AND_ASSIGN(DocumentResourceWaiter);
 };
 
 }  // namespace html_viewer
 
 #endif  // COMPONENTS_HTML_VIEWER_DOCUMENT_RESOURCE_WAITER_H_