Dispatch geolocation IPCs on the UI thread. Aside from simplifying the code to avoid a lot of threa…

chrome/browser/extensions/api/location/location_manager.h

 // Copyright (c) 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_LOCATION_LOCATION_MANAGER_H_
 #define CHROME_BROWSER_EXTENSIONS_API_LOCATION_LOCATION_MANAGER_H_
 
 #include <map>
 #include <string>
 
-#include "base/memory/weak_ptr.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 
 class Profile;
 
 namespace content {
 class BrowserContext;
 struct Geoposition;
 }  // namespace content
 
 namespace extensions {
 class LocationManager;
 class LocationRequest;
 
 namespace api {
 namespace location {
 
 struct Coordinates;
 
 }  // namespace location
 }  // namespace api
 
 // Profile's manager of all location watch requests created by chrome.location
 // API. Lives in the UI thread.
 class LocationManager : public BrowserContextKeyedAPI,
-                        public content::NotificationObserver,
-                        public base::SupportsWeakPtr<LocationManager> {
+                        public content::NotificationObserver {
  public:
   explicit LocationManager(content::BrowserContext* context);
   virtual ~LocationManager();
 
   // Adds location request for the given extension, and starts the location
   // tracking.
   void AddLocationRequest(
       const std::string& extension_id,
       const std::string& request_name,
       const double* distance_update_threshold_meters,
@@ skipping 47 matching lines @@
 
   // Used for tracking registrations to profile's extensions events.
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(LocationManager);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_LOCATION_LOCATION_MANAGER_H_