Adding histograms showing fraction of page load times

chrome/browser/net/chrome_url_request_context.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/chrome_url_request_context.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/io_thread.h"
+#include "chrome/browser/net/cache_stats.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_io_data.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/common/content_client.h"
 #include "net/cookies/cookie_store.h"
@@ skipping 260 matching lines @@
 
 void ChromeURLRequestContextGetter::OnDefaultCharsetChange(
     const std::string& default_charset) {
   GetIOContext()->OnDefaultCharsetChange(default_charset);
 }
 
 // ----------------------------------------------------------------------------
 // ChromeURLRequestContext
 // ----------------------------------------------------------------------------
 
-ChromeURLRequestContext::ChromeURLRequestContext()
+ChromeURLRequestContext::ChromeURLRequestContext(
+    ContextType type,
+    chrome_browser_net::CacheStats* cache_stats)
     : ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)),
-      is_incognito_(false) {
+      is_incognito_(false),
+      cache_stats_(cache_stats) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  if (cache_stats_)
+    cache_stats_->RegisterURLRequestContext(this, type);
 }
 
 ChromeURLRequestContext::~ChromeURLRequestContext() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  if (cache_stats_)
+    cache_stats_->UnregisterURLRequestContext(this);
 }
 
 void ChromeURLRequestContext::CopyFrom(ChromeURLRequestContext* other) {
   URLRequestContext::CopyFrom(other);
 
   // Copy ChromeURLRequestContext parameters.
   // ChromeURLDataManagerBackend is unique per context.
   set_is_incognito(other->is_incognito());
 }
 
@@ skipping 20 matching lines @@
       net::HttpUtil::GenerateAcceptLanguageHeader(accept_language));
 }
 
 void ChromeURLRequestContext::OnDefaultCharsetChange(
     const std::string& default_charset) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   set_referrer_charset(default_charset);
   set_accept_charset(
       net::HttpUtil::GenerateAcceptCharsetHeader(default_charset));
 }