mac: Prepare for -Wunused-functions.

content/child/indexed_db/indexed_db_dispatcher.cc

 // Copyright 2013 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 "content/child/indexed_db/indexed_db_dispatcher.h"
 
 #include "base/format_macros.h"
 #include "base/lazy_instance.h"
 #include "base/strings/stringprintf.h"
 #include "base/threading/thread_local.h"
@@ skipping 21 matching lines @@
 
 namespace content {
 static base::LazyInstance<ThreadLocalPointer<IndexedDBDispatcher> >::Leaky
     g_idb_dispatcher_tls = LAZY_INSTANCE_INITIALIZER;
 
 namespace {
 
 IndexedDBDispatcher* const kHasBeenDeleted =
     reinterpret_cast<IndexedDBDispatcher*>(0x1);
 
-int32 CurrentWorkerId() {
-  return WorkerTaskRunner::Instance()->CurrentWorkerId();
-}
 }  // unnamed namespace
 
 const size_t kMaxIDBValueSizeInBytes = 64 * 1024 * 1024;
 
 IndexedDBDispatcher::IndexedDBDispatcher(ThreadSafeSender* thread_safe_sender)
     : thread_safe_sender_(thread_safe_sender) {
   g_idb_dispatcher_tls.Pointer()->Set(this);
 }
 
 IndexedDBDispatcher::~IndexedDBDispatcher() {
@@ skipping 659 matching lines @@
     int32 ipc_exception_cursor_id) {
   typedef std::map<int32, RendererWebIDBCursorImpl*>::iterator Iterator;
   for (Iterator i = cursors_.begin(); i != cursors_.end(); ++i) {
     if (i->first == ipc_exception_cursor_id)
       continue;
     i->second->ResetPrefetchCache();
   }
 }
 
 }  // namespace content