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

chrome/browser/device_orientation/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.
-
-#ifndef CHROME_BROWSER_DEVICE_ORIENTATION_PROVIDER_H_
-#define CHROME_BROWSER_DEVICE_ORIENTATION_PROVIDER_H_
-
-#include "base/ref_counted.h"
-
-namespace device_orientation {
-
-class Orientation;
-
-class Provider : public base::RefCountedThreadSafe<Provider> {
- public:
-  class Observer {
-   public:
-    // Called when the orientation changes.
-    // An Observer must not synchronously call Provider::RemoveObserver
-    // or Provider::AddObserver when this is called.
-    virtual void OnOrientationUpdate(const Orientation& orientation) = 0;
-  };
-
-  // Returns a pointer to the singleton instance of this class.
-  // The caller should store the returned pointer in a scoped_refptr.
-  // The Provider instance is lazily constructed when GetInstance() is called,
-  // and destructed when the last scoped_refptr referring to it is destructed.
-  static Provider* GetInstance();
-
-  // Inject a mock Provider for testing. Only a weak pointer to the injected
-  // object will be held by Provider, i.e. it does not itself contribute to the
-  // injected object's reference count.
-  static void SetInstanceForTests(Provider* provider);
-
-  // Get the current instance. Used for testing.
-  static Provider* GetInstanceForTests();
-
-  // Note: AddObserver may call back synchronously to the observer with
-  // orientation data.
-  virtual void AddObserver(Observer* observer) = 0;
-  virtual void RemoveObserver(Observer* observer) = 0;
-
- protected:
-  Provider();
-  virtual ~Provider();
-
- private:
-  friend class base::RefCountedThreadSafe<Provider>;
-  static Provider* instance_;
-
-  DISALLOW_COPY_AND_ASSIGN(Provider);
-};
-
-}  // namespace device_orientation
-
-#endif  // CHROME_BROWSER_DEVICE_ORIENTATION_PROVIDER_H_