Add time-to-network histogram considering browser side navigation

content/browser/frame_host/navigator_impl.cc

 // Copyright 2013 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.
 
 #include "content/browser/frame_host/navigator_impl.h"
 
 #include "base/command_line.h"
+#include "base/metrics/histogram.h"
 #include "base/time/time.h"
 #include "content/browser/frame_host/frame_tree.h"
 #include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/frame_host/navigation_before_commit_info.h"
 #include "content/browser/frame_host/navigation_controller_impl.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
 #include "content/browser/frame_host/navigator_delegate.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/site_instance_impl.h"
@@ skipping 326 matching lines @@
 
   FrameMsg_Navigate_Params navigate_params;
   RenderFrameHostManager* manager =
       render_frame_host->frame_tree_node()->render_manager();
 
   // PlzNavigate: the RenderFrameHosts are no longer asked to navigate. Instead
   // the RenderFrameHostManager handles the navigation requests for that frame
   // node.
   if (CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableBrowserSideNavigation)) {
+    navigation_start_time_ = navigation_start;
+    navigation_start_url_ = entry.GetURL();
     // Create the navigation parameters.
     MakeNavigateParams(
         entry, *controller_, reload_type, navigation_start, &navigate_params);
     return manager->RequestNavigation(entry, navigate_params);
   }
 
   RenderFrameHostImpl* dest_render_frame_host = manager->Navigate(entry);
   if (!dest_render_frame_host)
     return false;  // Unable to create the desired RenderFrameHost.
 
@@ skipping 17 matching lines @@
 
   // Navigate in the desired RenderFrameHost.
   // We can skip this step in the rare case that this is a transfer navigation
   // which began in the chosen RenderFrameHost, since the request has already
   // been issued.  In that case, simply resume the response.
   bool is_transfer_to_same =
       navigate_params.transferred_request_child_id != -1 &&
       navigate_params.transferred_request_child_id ==
           dest_render_frame_host->GetProcess()->GetID();
   if (!is_transfer_to_same) {
+    navigation_start_time_ = navigation_start;
+    navigation_start_url_ = entry.GetURL();
     dest_render_frame_host->Navigate(navigate_params);
   } else {
     // No need to navigate again.  Just resume the deferred request.
     dest_render_frame_host->GetProcess()->ResumeDeferredNavigation(
         GlobalRequestID(navigate_params.transferred_request_child_id,
                         navigate_params.transferred_request_request_id));
   }
 
   // Make sure no code called via RFH::Navigate clears the pending entry.
   CHECK_EQ(controller_->GetPendingEntry(), &entry);
@@ skipping 141 matching lines @@
   }
 
   if (!did_navigate)
     return;  // No navigation happened.
 
   // DO NOT ADD MORE STUFF TO THIS FUNCTION! Your component should either listen
   // for the appropriate notification (best) or you can add it to
   // DidNavigateMainFramePostCommit / DidNavigateAnyFramePostCommit (only if
   // necessary, please).
 
+  // TODO(carlosk): Move this out when PlzNavigate implementation properly calls
+  // the observer methods.
+  if (details.is_main_frame &&
+      navigation_start_time_.ToInternalValue() != 0
+      && navigation_start_url_ == params.original_request_url) {
+    base::TimeDelta time_to_commit =
+        base::TimeTicks::Now() - navigation_start_time_;
+    UMA_HISTOGRAM_TIMES("Navigation.TimeToCommit", time_to_commit);
+    navigation_start_time_ = base::TimeTicks();
+  }
+
   // Run post-commit tasks.
   if (delegate_) {
     if (details.is_main_frame)
       delegate_->DidNavigateMainFramePostCommit(details, params);
 
     delegate_->DidNavigateAnyFramePostCommit(
         render_frame_host, details, params);
   }
 }
 
@@ skipping 103 matching lines @@
 
 void NavigatorImpl::CommitNavigation(
     RenderFrameHostImpl* render_frame_host,
     const NavigationBeforeCommitInfo& info) {
   CheckWebUIRendererDoesNotDisplayNormalURL(
       render_frame_host, info.navigation_url);
   // TODO(clamy): the render_frame_host should now send a commit IPC to the
   // renderer.
 }
 
+void NavigatorImpl::LogResourceRequestTime(
+    base::TimeTicks timestamp, const GURL& url) {
+  if (navigation_start_time_.ToInternalValue() != 0
+      && navigation_start_url_ == url) {
+    base::TimeDelta time_to_network = timestamp - navigation_start_time_;
+    UMA_HISTOGRAM_TIMES("Navigation.TimeToURLJobStart", time_to_network);
+  }
+}
+
 void NavigatorImpl::CheckWebUIRendererDoesNotDisplayNormalURL(
     RenderFrameHostImpl* render_frame_host,
     const GURL& url) {
   int enabled_bindings =
       render_frame_host->render_view_host()->GetEnabledBindings();
   bool is_allowed_in_web_ui_renderer =
       WebUIControllerFactoryRegistry::GetInstance()->IsURLAcceptableForWebUI(
           controller_->GetBrowserContext(), url);
   if ((enabled_bindings & BINDINGS_POLICY_WEB_UI) &&
       !is_allowed_in_web_ui_renderer) {
     // Log the URL to help us diagnose any future failures of this CHECK.
     GetContentClient()->SetActiveURL(url);
     CHECK(0);
   }
 }
 
 }  // namespace content