Make using WebContentsUserData simpler.

chrome/browser/net/load_time_stats.cc

 // Copyright (c) 2012 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/net/load_time_stats.h"
 
 #include "base/metrics/histogram.h"
 #include "base/stl_util.h"
 #include "base/string_number_conversions.h"
 #include "base/timer.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/io_thread.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/resource_request_info.h"
 #include "content/public/browser/web_contents.h"
 #include "net/url_request/url_request.h"
 
 using content::BrowserThread;
 using content::RenderViewHost;
 using content::ResourceRequestInfo;
 using std::string;
 
+DEFINE_WEB_CONTENTS_USER_DATA_KEY(chrome_browser_net::LoadTimeStatsTabHelper)
+
 namespace {
 
 bool GetRenderView(const net::URLRequest& request,
                    int* process_id, int* route_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(&request);
   if (!info)
     return false;
   return info->GetAssociatedRenderView(process_id, route_id);
 }
@@ skipping 211 matching lines @@
  private:
   base::TimeTicks GetCurrentTime() {
     return base::TimeTicks::Now();
   }
   bool done_;
   base::TimeTicks start_time_;
   RequestStatus status_;
   base::TimeDelta status_times_[REQUEST_STATUS_MAX];
 };
 
-int LoadTimeStatsTabHelper::kUserDataKey;
-
 LoadTimeStatsTabHelper::LoadTimeStatsTabHelper(
     content::WebContents* web_contents)
     : content::WebContentsObserver(web_contents) {
   is_otr_profile_ = web_contents->GetBrowserContext()->IsOffTheRecord();
 }
 
 LoadTimeStatsTabHelper::~LoadTimeStatsTabHelper() {
 }
 
 void LoadTimeStatsTabHelper::DidStartProvisionalLoadForFrame(
@@ skipping 277 matching lines @@
   if (type == ChromeURLRequestContext::CONTEXT_TYPE_MAIN)
     main_request_contexts_.insert(context);
 }
 
 void LoadTimeStats::UnregisterURLRequestContext(
     const net::URLRequestContext* context) {
   main_request_contexts_.erase(context);
 }
 
 }  // namespace chrome_browser_net