Remove threading from WifiDataProviderCommon.

content/browser/geolocation/wifi_data_provider_chromeos.cc

 // Copyright (c) 2012 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.
 
 // Provides wifi scan API binding for chromeos, using proprietary APIs.
 
 #include "content/browser/geolocation/wifi_data_provider_chromeos.h"
 
 #include "base/bind.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 11 matching lines @@
 const int kNoWifiPollingIntervalMilliseconds = 20 * 1000; // 20s
 
 }  // namespace
 
 WifiDataProviderChromeOs::WifiDataProviderChromeOs() : started_(false) {
 }
 
 WifiDataProviderChromeOs::~WifiDataProviderChromeOs() {
 }
 
-bool WifiDataProviderChromeOs::StartDataProvider() {
+void WifiDataProviderChromeOs::StartDataProvider() {
   DCHECK(CalledOnClientThread());
 
   DCHECK(polling_policy_ == NULL);
   polling_policy_.reset(
       new GenericPollingPolicy<kDefaultPollingIntervalMilliseconds,
                                kNoChangePollingIntervalMilliseconds,
                                kTwoNoChangePollingIntervalMilliseconds,
                                kNoWifiPollingIntervalMilliseconds>);
 
   ScheduleStart();
-  return true;
 }
 
 void WifiDataProviderChromeOs::StopDataProvider() {
   DCHECK(CalledOnClientThread());
 
   polling_policy_.reset();
   ScheduleStop();
 }
 
 bool WifiDataProviderChromeOs::GetData(WifiData* data) {
@@ skipping 113 matching lines @@
   return true;
 }
 
 // static
 template<>
 WifiDataProviderImplBase* WifiDataProvider::DefaultFactoryFunction() {
   return new WifiDataProviderChromeOs();
 }
 
 }  // namespace content