Clean up WifiDataProvider(Manager)

content/browser/geolocation/wifi_data_provider.h

Index: content/browser/geolocation/wifi_data_provider.h
diff --git a/content/browser/geolocation/wifi_data_provider.h b/content/browser/geolocation/wifi_data_provider.h
index 207b3ffe594f28db2ee7ab37fea8739c45e9caf7..98d22963e9f7a074e4a254ca3d7194abacd716b6 100644
--- a/content/browser/geolocation/wifi_data_provider.h
+++ b/content/browser/geolocation/wifi_data_provider.h
@@ -19,8 +19,6 @@
 
 namespace content {
 
-class WifiDataProviderManager;
-
 class CONTENT_EXPORT WifiDataProvider
     : public base::RefCountedThreadSafe<WifiDataProvider> {
  public:
@@ -39,11 +37,7 @@ class CONTENT_EXPORT WifiDataProvider
   // obtain.
   virtual bool GetData(WifiData* data) = 0;
 
-  // Sets the container of this class, which is of type WifiDataProviderManager.
-  // This is required to pass as a parameter when calling a callback.
-  void SetContainer(WifiDataProviderManager* container);
-
-  typedef base::Callback<void(WifiDataProviderManager*)> WifiDataUpdateCallback;
+  typedef base::Closure WifiDataUpdateCallback;
 
   void AddCallback(WifiDataUpdateCallback* callback);
 
@@ -68,8 +62,6 @@ class CONTENT_EXPORT WifiDataProvider
  private:
   void DoRunCallbacks();
 
-  WifiDataProviderManager* container_;
-
   // Reference to the client's message loop. All callbacks should happen in this
   // context.
   base::MessageLoop* client_loop_;