Introduce per-tab preferences service.

chrome/browser/prefs/pref_service_mock_builder.cc

Index: chrome/browser/prefs/pref_service_mock_builder.cc
diff --git a/chrome/browser/prefs/pref_service_mock_builder.cc b/chrome/browser/prefs/pref_service_mock_builder.cc
index c4916cbc97e265b9152884a002e49c72c1b802bf..d6c2ca6858ee64d7b2491aefb21455a0289e33a0 100644
--- a/chrome/browser/prefs/pref_service_mock_builder.cc
+++ b/chrome/browser/prefs/pref_service_mock_builder.cc
@@ -7,7 +7,10 @@
 #include "chrome/browser/policy/configuration_policy_pref_store.h"
 #include "chrome/browser/prefs/command_line_pref_store.h"
 #include "chrome/browser/prefs/default_pref_store.h"
+#include "chrome/browser/prefs/pref_model_associator.h"
+#include "chrome/browser/prefs/pref_notifier_impl.h"
 #include "chrome/browser/prefs/pref_service.h"
+#include "chrome/browser/prefs/pref_value_store.h"
 #include "chrome/browser/prefs/testing_pref_store.h"
 #include "chrome/common/json_pref_store.h"
 #include "content/public/browser/browser_thread.h"
@@ -109,16 +112,18 @@ PrefServiceMockBuilder::WithUserFilePrefs(const FilePath& prefs_file) {
 }
 
 PrefService* PrefServiceMockBuilder::Create() {
-  PrefService* pref_service =
-      new PrefService(managed_platform_prefs_.get(),
-                      managed_cloud_prefs_.get(),
-                      extension_prefs_.get(),
-                      command_line_prefs_.get(),
-                      user_prefs_.get(),
-                      recommended_platform_prefs_.get(),
-                      recommended_cloud_prefs_.get(),
-                      new DefaultPrefStore(),
-                      false);
+  PrefService* pref_service = new PrefService(
+      new PrefValueStore(managed_platform_prefs_.get(),
+                         managed_cloud_prefs_.get(),
+                         extension_prefs_.get(),
+                         command_line_prefs_.get(),
+                         user_prefs_.get(),
+                         recommended_platform_prefs_.get(),
+                         recommended_cloud_prefs_.get(),
+                         new DefaultPrefStore(),
+                         new PrefModelAssociator(),
+                         new PrefNotifierImpl()),
+      false);
   managed_platform_prefs_ = NULL;
   managed_cloud_prefs_ = NULL;
   extension_prefs_ = NULL;