WIP: Introduce per-TabContents PrefService.

chrome/browser/profiles/profile_impl.cc

 // Copyright (c) 2011 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/profiles/profile_impl.h"
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/environment.h"
 #include "base/file_path.h"
@@ skipping 78 matching lines @@
 #include "content/browser/appcache/chrome_appcache_service.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/chrome_blob_storage_context.h"
 #include "content/browser/download/download_manager.h"
 #include "content/browser/file_system/browser_file_system_helper.h"
 #include "content/browser/host_zoom_map.h"
 #include "content/browser/in_process_webkit/webkit_context.h"
 #include "content/browser/renderer_host/render_process_host.h"
 #include "content/browser/speech/speech_input_manager.h"
 #include "content/browser/ssl/ssl_host_state.h"
+#include "content/browser/tab_contents/tab_contents.h"
 #include "content/browser/user_metrics.h"
 #include "content/common/notification_service.h"
 #include "grit/browser_resources.h"
 #include "grit/locale_settings.h"
 #include "net/base/transport_security_state.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "webkit/database/database_tracker.h"
 #include "webkit/quota/quota_manager.h"
 
 #if defined(OS_WIN)
@@ skipping 825 matching lines @@
 PrefService* ProfileImpl::GetOffTheRecordPrefs() {
   if (!otr_prefs_.get()) {
     // The new ExtensionPrefStore is ref_counted and the new PrefService
     // stores a reference so that we do not leak memory here.
     otr_prefs_.reset(GetPrefs()->CreateIncognitoPrefService(
         new ExtensionPrefStore(GetExtensionPrefValueMap(), true)));
   }
   return otr_prefs_.get();
 }
 
+PrefService* ProfileImpl::GetPrefsForTabContents(TabContents* contents) {
+  static PropertyAccessor<PrefService*>* accessor = NULL;
+  if (!accessor)
+    accessor = new PropertyAccessor<PrefService*>;
+
+  PrefService** prefs_property =
+      accessor->GetProperty(contents->property_bag());
+  if (prefs_property && *prefs_property)
+    return *prefs_property;
+
+  PrefService* prefs = GetPrefs()->CreateTabContentsPrefService();
+  accessor->SetProperty(contents->property_bag(), prefs);
+  return prefs;
+}
+
 FilePath ProfileImpl::GetPrefFilePath() {
   FilePath pref_file_path = path_;
   pref_file_path = pref_file_path.Append(chrome::kPreferencesFilename);
   return pref_file_path;
 }
 
 net::URLRequestContextGetter* ProfileImpl::GetRequestContext() {
   net::URLRequestContextGetter* request_context =
       io_data_.GetMainRequestContextGetter();
   // The first request context is always a normal (non-OTR) request context.
@@ skipping 782 matching lines @@
 #endif
   }
   return prerender_manager_.get();
 }
 
 SpellCheckProfile* ProfileImpl::GetSpellCheckProfile() {
   if (!spellcheck_profile_.get())
     spellcheck_profile_.reset(new SpellCheckProfile());
   return spellcheck_profile_.get();
 }