Move appcache/file_sytem/device_orientation subdirectories of chrome\browser ...

chrome/browser/device_orientation/provider_impl.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.
-
-#ifndef CHROME_BROWSER_DEVICE_ORIENTATION_PROVIDER_IMPL_H_
-#define CHROME_BROWSER_DEVICE_ORIENTATION_PROVIDER_IMPL_H_
-
-#include <set>
-#include <vector>
-
-#include "base/scoped_ptr.h"
-#include "base/task.h"
-#include "chrome/browser/device_orientation/data_fetcher.h"
-#include "chrome/browser/device_orientation/orientation.h"
-#include "chrome/browser/device_orientation/provider.h"
-
-class MessageLoop;
-
-namespace base {
-class Thread;
-}
-
-namespace device_orientation {
-
-class ProviderImpl : public Provider {
- public:
-  typedef DataFetcher* (*DataFetcherFactory)();
-
-  // Create a ProviderImpl that uses the NULL-terminated factories array to find
-  // a DataFetcher that can provide orientation data.
-  ProviderImpl(const DataFetcherFactory factories[]);
-
-  // From Provider.
-  virtual void AddObserver(Observer* observer);
-  virtual void RemoveObserver(Observer* observer);
-
- private:
-  virtual ~ProviderImpl();
-
-  // Starts or Stops the provider. Called from creator_loop_.
-  void Start();
-  void Stop();
-
-  // Method for finding a suitable DataFetcher and starting the polling.
-  // Runs on the polling_thread_.
-  void DoInitializePollingThread(std::vector<DataFetcherFactory> factories);
-  void ScheduleInitializePollingThread();
-
-  // Method for polling a DataFetcher. Runs on the polling_thread_.
-  void DoPoll();
-  void ScheduleDoPoll();
-
-  // Method for notifying observers of an orientation update.
-  // Runs on the creator_thread_.
-  void DoNotify(const Orientation& orientation);
-  void ScheduleDoNotify(const Orientation& orientation);
-
-  static bool SignificantlyDifferent(const Orientation& orientation1,
-                                     const Orientation& orientation2);
-
-  enum { kDesiredSamplingIntervalMs = 100 };
-  int SamplingIntervalMs() const;
-
-  // The Message Loop on which this object was created.
-  // Typically the I/O loop, but may be something else during testing.
-  MessageLoop* creator_loop_;
-
-  // Members below are only to be used from the creator_loop_.
-  std::vector<DataFetcherFactory> factories_;
-  std::set<Observer*> observers_;
-  Orientation last_notification_;
-
-  // When polling_thread_ is running, members below are only to be used
-  // from that thread.
-  scoped_ptr<DataFetcher> data_fetcher_;
-  Orientation last_orientation_;
-  ScopedRunnableMethodFactory<ProviderImpl> do_poll_method_factory_;
-
-  // Polling is done on this background thread.
-  scoped_ptr<base::Thread> polling_thread_;
-};
-
-}  // namespace device_orientation
-
-#endif  // CHROME_BROWSER_DEVICE_ORIENTATION_PROVIDER_IMPL_H_