Remove safe_browsing=2 functionality, replace with =3 mode.

chrome/browser/profiles/off_the_record_profile_io_data.cc

Index: chrome/browser/profiles/off_the_record_profile_io_data.cc
diff --git a/chrome/browser/profiles/off_the_record_profile_io_data.cc b/chrome/browser/profiles/off_the_record_profile_io_data.cc
index c0f8e5c57addf0a0239d7adb9cad6af51fa09c9e..908df15e5bdc9a901f7aaa670c3d7e00cc19fa5a 100644
--- a/chrome/browser/profiles/off_the_record_profile_io_data.cc
+++ b/chrome/browser/profiles/off_the_record_profile_io_data.cc
@@ -159,12 +159,10 @@ void OffTheRecordProfileIOData::Handle::LazyInitialize() const {
   // Set initialized_ to true at the beginning in case any of the objects
   // below try to get the ResourceContext pointer.
   initialized_ = true;
-#if defined(SAFE_BROWSING_SERVICE)
   io_data_->safe_browsing_enabled()->Init(prefs::kSafeBrowsingEnabled,
       profile_->GetPrefs());
   io_data_->safe_browsing_enabled()->MoveToThread(
       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
-#endif
   io_data_->InitializeOnUIThread(profile_);
 }