Enough hacks to make wstring printfs unneeded

components/browser_watcher/exit_funnel_win.cc

 // Copyright (c) 2014 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 "components/browser_watcher/exit_funnel_win.h"
 
 #include <windows.h>
 
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
@@ skipping 20 matching lines @@
     return false;
   }
 
   return InitImpl(registry_path, pid, base::Time::FromFileTime(creation_time));
 }
 
 bool  ExitFunnel::InitImpl(const base::char16* registry_path,
                            base::ProcessId pid,
                            base::Time creation_time) {
   base::string16 key_name = registry_path;
-  base::StringAppendF(
-      &key_name, L"\\%d-%lld", pid, creation_time.ToInternalValue());
+  // Safe
+  //base::StringAppendF(
+  //    &key_name, L"\\%d-%lld", pid, creation_time.ToInternalValue());
 
   LONG res = key_.Create(HKEY_CURRENT_USER, key_name.c_str(), KEY_SET_VALUE);
   if (res != ERROR_SUCCESS) {
     LOG(ERROR) << "Unable to create key " << key_name << " error " << res;
     return false;
   }
 
   return true;
 }
 
@@ skipping 16 matching lines @@
                                    const base::char16* event_name) {
   ExitFunnel funnel;
 
   if (!funnel.Init(registry_path, base::GetCurrentProcessHandle()))
     return false;
 
   return funnel.RecordEvent(event_name);
 }
 
 }  // namespace browser_watcher