Create a DataUseRecorder instance for each page load in Chrome.

chrome/browser/data_use_measurement/chrome_data_use_ascriber_service.cc

 // Copyright 2016 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 "chrome/browser/data_use_measurement/chrome_data_use_ascriber_service.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/data_use_measurement/chrome_data_use_ascriber.h"
@@ skipping 97 matching lines @@
       base::Bind(&ChromeDataUseAscriber::RenderFrameDeleted,
                  base::Unretained(ascriber_),
                  render_frame_host->GetProcess()->GetID(),
                  render_frame_host->GetRoutingID(), parent_render_process_id,
                  parent_render_frame_id));
 }
 
 void ChromeDataUseAscriberService::DidStartNavigation(
     content::NavigationHandle* navigation_handle) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-
   if (!navigation_handle->IsInMainFrame())
     return;
 
   if (!ascriber_)
     return;
-
   content::WebContents* web_contents = navigation_handle->GetWebContents();
   content::BrowserThread::PostTask(
       content::BrowserThread::IO, FROM_HERE,
       base::Bind(&ChromeDataUseAscriber::DidStartMainFrameNavigation,
                  base::Unretained(ascriber_), navigation_handle->GetURL(),
                  web_contents->GetRenderProcessHost()->GetID(),
                  web_contents->GetMainFrame()->GetRoutingID(),
                  navigation_handle));
 }
 
@@ skipping 13 matching lines @@
       base::Bind(
           &ChromeDataUseAscriber::ReadyToCommitMainFrameNavigation,
           base::Unretained(ascriber_), navigation_handle->GetURL(),
           navigation_handle->GetGlobalRequestID(),
           web_contents->GetRenderProcessHost()->GetID(),
           web_contents->GetMainFrame()->GetRoutingID(),
           !navigation_handle->HasCommitted() || navigation_handle->IsSamePage(),
           navigation_handle));
 }
 
-void ChromeDataUseAscriberService::DidRedirectNavigation(
-    content::NavigationHandle* navigation_handle) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-
-  if (!is_initialized_ || !navigation_handle->IsInMainFrame())
-    return;
-
-  if (!ascriber_)
-    return;
-
-  content::WebContents* web_contents = navigation_handle->GetWebContents();
-  content::BrowserThread::PostTask(
-      content::BrowserThread::IO, FROM_HERE,
-      base::Bind(&ChromeDataUseAscriber::DidRedirectMainFrameNavigation,
-                 base::Unretained(ascriber_), navigation_handle->GetURL(),
-                 web_contents->GetRenderProcessHost()->GetID(),
-                 web_contents->GetMainFrame()->GetRoutingID(),
-                 navigation_handle));
-}
-
 void ChromeDataUseAscriberService::SetDataUseAscriber(
     ChromeDataUseAscriber* ascriber) {
   DCHECK(!is_initialized_);
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 
   ascriber_ = ascriber;
   is_initialized_ = true;
 
   for (auto& it : pending_frames_queue_) {
     RenderFrameCreated(it);
   }
   pending_frames_queue_.clear();
 }
 
 }  // namespace data_use_measurement