Refactor WifiDataProviderChromeOs to implement WifiDataProviderImplBase directly.

content/browser/geolocation/device_data_provider.h

 // Copyright (c) 2010 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.
 
 // A device data provider provides data from the device that is used by a
 // NetworkLocationProvider to obtain a position fix. This data may be either
 // cell radio data or wifi data. For a given type of data, we use a singleton
 // instance of the device data provider, which is used by multiple
 // NetworkLocationProvider objects.
 //
@@ skipping 212 matching lines @@
     // Always make the nitofy callback via a posted task, se we can unwind
     // callstack here and make callback without causing client re-entrancy.
     client_loop_->PostTask(FROM_HERE, NewRunnableMethod(this,
         &DeviceDataProviderImplBase<DataType>::NotifyListenersInClientLoop));
   }
 
   bool CalledOnClientThread() const {
     return MessageLoop::current() == this->client_loop_;
   }
 
+  MessageLoop* client_loop() const {
+    return client_loop_;
+  }
+
  private:
   void NotifyListenersInClientLoop() {
     DCHECK(CalledOnClientThread());
     // It's possible that all the listeners (and the container) went away
     // whilst this task was pending. This is fine; the loop will be a no-op.
     typename ListenersSet::const_iterator iter = listeners_.begin();
     while (iter != listeners_.end()) {
       ListenerInterface* listener = *iter;
       ++iter;  // Advance iter before callback, in case listener unregisters.
       listener->DeviceDataUpdateAvailable(container_);
@@ skipping 150 matching lines @@
 // static
 template<typename DataType>
 typename DeviceDataProvider<DataType>::ImplFactoryFunction
     DeviceDataProvider<DataType>::factory_function_ = DefaultFactoryFunction;
 
 typedef DeviceDataProvider<GatewayData> GatewayDataProvider;
 typedef DeviceDataProvider<RadioData> RadioDataProvider;
 typedef DeviceDataProvider<WifiData> WifiDataProvider;
 
 #endif  // CONTENT_BROWSER_GEOLOCATION_DEVICE_DATA_PROVIDER_H_