Add a mechanism to pause and resume geolocation requests.

content/browser/geolocation/location_api_adapter_android.h

 // 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.
 
 #ifndef CONTENT_BROWSER_GEOLOCATION_LOCATION_API_ADAPTER_ANDROID_H_
 #define CONTENT_BROWSER_GEOLOCATION_LOCATION_API_ADAPTER_ANDROID_H_
 
 #include "base/android/jni_helper.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/memory/ref_counted.h"
@@ skipping 19 matching lines @@
 // one AndroidLocationProvider that has called Start().
 class AndroidLocationApiAdapter {
  public:
   // Starts the underlying location provider, returns true if successful.
   // Called on the Geolocation thread.
   bool Start(LocationProviderAndroid* location_provider, bool high_accuracy);
   // Stops the underlying location provider.
   // Called on the Geolocation thread.
   void Stop();
 
+  // Pauses the underlying location provider, preventing it from firing new
+  // updates. This is intended as a lighter weight alternative to Stop() that
+  // can be easily resumed without needing to call Start() again.
+  void Pause();
+
+  // Resumes the underlying location provider. Should not be invoked unless
+  // the location provider has already been paused.
+  void Resume();
+
   // Returns our singleton.
   static AndroidLocationApiAdapter* GetInstance();
 
   // Called when initializing chrome_view to obtain a pointer to the java class.
   static bool RegisterGeolocationService(JNIEnv* env);
 
   // Called by JNI on main thread looper.
   static void OnNewLocationAvailable(double latitude,
                                      double longitude,
                                      double time_stamp,
@@ skipping 22 matching lines @@
 
   // Guards against the following member which is accessed on Geolocation
   // thread and the JNI main thread looper.
   base::Lock lock_;
   scoped_refptr<base::MessageLoopProxy> message_loop_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GEOLOCATION_LOCATION_API_ADAPTER_ANDROID_H_