Moved c/b/e/*idle* to c/b/e/api/idle/

chrome/browser/extensions/extension_idle_api.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 CHROME_BROWSER_EXTENSIONS_EXTENSION_IDLE_API_H_
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_IDLE_API_H_
-#pragma once
-
-#include "chrome/browser/idle.h"
-#include "chrome/browser/extensions/extension_function.h"
-
-class Profile;
-
-// Event router class for events related to the idle API.
-class ExtensionIdleEventRouter {
- public:
-  static void OnIdleStateChange(Profile* profile,
-                                IdleState idleState);
- private:
-  DISALLOW_COPY_AND_ASSIGN(ExtensionIdleEventRouter);
-};
-
-// Implementation of the chrome.idle.queryState API.
-class ExtensionIdleQueryStateFunction : public AsyncExtensionFunction {
- public:
-  DECLARE_EXTENSION_FUNCTION_NAME("idle.queryState")
-
- protected:
-  virtual ~ExtensionIdleQueryStateFunction() {}
-
-  // ExtensionFunction:
-  virtual bool RunImpl() OVERRIDE;
-
- private:
-  void IdleStateCallback(int threshold, IdleState state);
-};
-
-// Class used for caching answers from CalculateIdleState.
-class ExtensionIdleCache {
- public:
-  static IdleState CalculateIdleState(int threshold);
-  static void UpdateCache(int threshold, IdleState state);
-
- private:
-  FRIEND_TEST_ALL_PREFIXES(ExtensionIdleApiTest, CacheTest);
-
-  struct CacheData {
-    // Latest moment in history after which we are certain that there was some
-    // activity. If we are querying for a  threshold beyond this moment, we know
-    // the result will be active.
-    double latest_known_active;
-    // [idle_interval_start, idle_interval_end] is the latest interval in
-    // history for which we are certain there was no activity.
-    double idle_interval_start;
-    double idle_interval_end;
-    // Set iff the last recored query result was IDLE_STATE_LOCKED. Equals the
-    // moment the result was recorded in cache.
-    double latest_locked;
-  };
-
-  // We assume moment is increasing with every call to one of these two methods.
-
-  // Tries to determine the idle state based on results of previous queries.
-  // |threshold| is time span in seconds from now we consider in calculating
-  // state.
-  // |moment| is the moment in time this method was called (should be equal to
-  // now, except in tests).
-  // Returns calculated state, or IDLE_STATE_UNKNOWN if the state could not be
-  // determined.
-  static IdleState CalculateState(int threshold, double moment);
-
-  // Updates cached data with the latest query result.
-  // |threshold| is threshold parameter of the query.
-  // |state| is result of the query.
-  // |moment| is moment in time this method is called.
-  static void Update(int threshold, IdleState state, double moment);
-
-  static int get_min_threshold();
-  static double get_throttle_interval();
-
-  static CacheData cached_data;
-};
-
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_IDLE_API_H_