Remove HistoryPublisher code.

chrome/browser/history/page_collector.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_HISTORY_PAGE_COLLECTOR_H_
-#define CHROME_BROWSER_HISTORY_PAGE_COLLECTOR_H_
-
-#include "base/basictypes.h"
-#include "base/containers/mru_cache.h"
-#include "base/memory/weak_ptr.h"
-#include "base/strings/string16.h"
-#include "base/time/time.h"
-
-class GURL;
-
-namespace history {
-
-class HistoryPublisher;
-
-// Collect page data and publish to HistoryPublisher.
-class PageCollector {
- public:
-  // You must call Init() to complete initialization.
-  PageCollector();
-  ~PageCollector();
-
-  // Must call before using other functions.
-  void Init(const HistoryPublisher* history_publisher);
-
-  // Sets specific information for the given page to be published.
-  // In normal operation, URLs will be added as the user visits them, the titles
-  // and bodies will come in some time after that. These changes will be
-  // automatically coalesced and added to the database some time in the future
-  // using AddPageData().
-  //
-  // AddPageURL must be called for a given URL before either the title
-  // or body set. The visit time should be the time corresponding to
-  // that visit in the history database.
-  void AddPageURL(const GURL& url, base::Time visit_time);
-  void AddPageTitle(const GURL& url, const string16& title);
-  void AddPageContents(const GURL& url, const string16& body);
-
-  void AddPageData(const GURL& url,
-                   base::Time visit_time,
-                   const string16& title,
-                   const string16& body);
-
- private:
-  // Stores "recent stuff" that has happened with the page, since the page
-  // visit, title, and body all come in at different times.
-  class PageInfo {
-   public:
-    explicit PageInfo(base::Time visit_time);
-    ~PageInfo();
-
-    // Getters.
-    base::Time visit_time() const { return visit_time_; }
-    const string16& title() const { return title_; }
-    const string16& body() const { return body_; }
-
-    // Setters, we can only update the title and body.
-    void set_title(const string16& ttl);
-    void set_body(const string16& bdy);
-
-    // Returns true if both the title or body of the entry has been set. Since
-    // both the title and body setters will "fix" empty strings to be a space,
-    // these indicate if the setter was ever called.
-    bool has_title() const { return !title_.empty(); }
-    bool has_body() const { return !body_.empty(); }
-
-    // Returns true if this entry was added too long ago and we should give up
-    // waiting for more data. The current time is passed in as an argument so we
-    // can check many without re-querying the timer.
-    bool Expired(base::TimeTicks now) const;
-
-   private:
-    // Time of the visit of the URL. This will be the value stored in the URL
-    // and visit tables for the entry.
-    base::Time visit_time_;
-
-    // When this page entry was created. We have a cap on the maximum time that
-    // an entry will be in the queue before being flushed to the database.
-    base::TimeTicks added_time_;
-
-    // Will be the string " " when they are set to distinguish set and unset.
-    string16 title_;
-    string16 body_;
-  };
-
-  // Collected data is published when both the title and body are
-  // present.  https data is never passed to AddPageContents(), so
-  // periodically collected data is published without the contents.
-  // Pages which take a long time to load will not have their bodies
-  // published.
-  void ScheduleFlushCollected();
-  void FlushCollected();
-
-  // Lists recent additions that we have not yet filled out with the title and
-  // body. Sorted by time, we will flush them when they are complete or have
-  // been in the queue too long without modification.
-  //
-  // We kind of abuse the MRUCache because we never move things around in it
-  // using Get. Instead, we keep them in the order they were inserted, since
-  // this is the metric we use to measure age. The MRUCache gives us an ordered
-  // list with fast lookup by URL.
-  typedef base::MRUCache<GURL, PageInfo> RecentChangeList;
-  RecentChangeList recent_changes_;
-
-  // Generates tasks for our periodic checking of expired "recent changes".
-  base::WeakPtrFactory<PageCollector> weak_factory_;
-
-  // This object is created and managed by the history backend. We maintain an
-  // opaque pointer to the object for our use.
-  // This can be NULL if there are no indexers registered to receive indexing
-  // data from us.
-  const HistoryPublisher* history_publisher_;
-
-  DISALLOW_COPY_AND_ASSIGN(PageCollector);
-};
-
-}  // namespace history
-
-#endif  // CHROME_BROWSER_HISTORY_PAGE_COLLECTOR_H_