Implement policy for enabling/disabling browsing history.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/3432033

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@61169 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index c737a63e..03d18f4e 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -35,6 +35,7 @@
 #include "chrome/browser/page_info_model.h"
 #include "chrome/browser/password_manager/password_manager.h"
 #include "chrome/browser/prefs/session_startup_pref.h"
+#include "chrome/browser/profile_impl.h"
 #include "chrome/browser/renderer_host/browser_render_process_host.h"
 #include "chrome/browser/renderer_host/web_cache_manager.h"
 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
@@ -121,6 +122,7 @@
     LabsUI::RegisterUserPrefs(user_prefs);
   NewTabUI::RegisterUserPrefs(user_prefs);
   PluginsUI::RegisterUserPrefs(user_prefs);
+  ProfileImpl::RegisterUserPrefs(user_prefs);
   HostContentSettingsMap::RegisterUserPrefs(user_prefs);
   HostZoomMap::RegisterUserPrefs(user_prefs);
   DevToolsManager::RegisterUserPrefs(user_prefs);