Provide mutable members of UrlRequestContext via pure-virtual interface

chrome/browser/profiles/profile_io_data.h

Index: chrome/browser/profiles/profile_io_data.h
diff --git a/chrome/browser/profiles/profile_io_data.h b/chrome/browser/profiles/profile_io_data.h
index f9c8a887ecc369658f36e79184c6c083f391b1ec..3665369fcb7f885ecb1ee9cbca7d9b0664120068 100644
--- a/chrome/browser/profiles/profile_io_data.h
+++ b/chrome/browser/profiles/profile_io_data.h
@@ -22,6 +22,7 @@
 #include "net/http/http_network_session.h"
 #include "net/url_request/url_request_job_factory.h"
 
+class ChromeHttpUserAgentSettings;
 class CookieSettings;
 class DesktopNotificationService;
 class ExtensionInfoMap;
@@ -184,8 +185,6 @@ class ProfileIOData {
     ~ProfileParams();
 
     FilePath path;
-    std::string accept_language;
-    std::string accept_charset;
     IOThread* io_thread;
     scoped_refptr<CookieSettings> cookie_settings;
     scoped_refptr<net::SSLConfigService> ssl_config_service;
@@ -209,6 +208,9 @@ class ProfileIOData {
     // because on linux it relies on initializing things through gconf,
     // and needs to be on the main thread.
     scoped_ptr<net::ProxyConfigService> proxy_config_service;
+    // We need to initialize the ChromeHttpUserAgentSettings on the UI thread
+    // so it can sign up for notifications from the PrefService.
+    scoped_ptr<ChromeHttpUserAgentSettings> chrome_http_user_agent_settings;
     // The profile this struct was populated from. It's passed as a void* to
     // ensure it's not accidently used on the IO thread. Before using it on the
     // UI thread, call ProfileManager::IsValidProfile to ensure it's alive.
@@ -424,6 +426,9 @@ class ProfileIOData {
   mutable scoped_ptr<chrome_browser_net::ResourcePrefetchPredictorObserver>
       resource_prefetch_predictor_observer_;
 
+  mutable scoped_ptr<ChromeHttpUserAgentSettings>
+      chrome_http_user_agent_settings_;
+
   mutable chrome_browser_net::LoadTimeStats* load_time_stats_;
 
   // TODO(jhawkins): Remove once crbug.com/102004 is fixed.