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diff --git a/chrome/browser/history/history_publisher.h b/chrome/browser/history/history_publisher.h
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+++ b/chrome/browser/history/history_publisher.h
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+// Copyright (c) 2008 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_HISTORY_PUBLISHER_H_
+#define CHROME_BROWSER_HISTORY_HISTORY_PUBLISHER_H_
+
+#include <vector>
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/time.h"
+#include "chrome/browser/history/history_types.h"
+#include "googleurl/src/gurl.h"
+
+#if defined(OS_WIN)
+#include <atlbase.h>
+#include <atlcomcli.h>
+#include "history_indexer.h"
+#endif
+
+namespace history {
+
+class HistoryPublisher {
+ public:
+  HistoryPublisher();
+  ~HistoryPublisher();
+
+  // Must call this function to complete initialization. Returns true if we
+  // need to publish data to any indexers registered with us. Returns false if
+  // there are none registered. On false, no other function should be called.
+  bool Init();
+
+  void PublishPageThumbnail(const std::vector<unsigned char>& thumbnail,
+                            const GURL& url, const base::Time& time) const;
+  void PublishPageContent(const base::Time& time, const GURL& url,
+                          const std::wstring& title,
+                          const std::wstring& contents) const;
+  void DeleteUserHistoryBetween(const base::Time& begin_time,
+                                const base::Time& end_time) const;
+
+ private:
+  struct PageData {
+    const base::Time& time;
+    const GURL& url;
+    const wchar_t* html;
+    const wchar_t* title;
+    const char* thumbnail_format;
+    const std::vector<unsigned char>* thumbnail;
+  };
+  void PublishDataToIndexers(const PageData& page_data) const;
+
+  // Converts time represented by the Time class object to variant time in UTC.
+  // Returns '0' if the time object is NULL.
+  static double TimeToUTCVariantTime(const base::Time& time);
+
+  // Initializes the indexer_list_ with the list of indexers that registered
+  // with us to index history. Returns true if there are any registered.
+  bool ReadRegisteredIndexersFromRegistry();
+
+ private:
+#if defined(OS_WIN)
+  typedef std::vector<CComPtr<IChromeHistoryIndexer> > IndexerList;
+
+  // The list of indexers registered to receive history data from us.
+  IndexerList indexers_;
+#endif
+
+  // The Registry key under HKCU where the indexers need to register their
+  // CLSID.
+  static const wchar_t* kRegKeyRegisteredIndexersInfo;
+
+  // The format of the thumbnail we pass to indexers.
+  static const char* kThumbnailImageFormat;
+
+  DISALLOW_COPY_AND_ASSIGN(HistoryPublisher);
+};
+
+}  // namespace history
+
+#endif  // CHROME_BROWSER_HISTORY_HISTORY_PUBLISHER_H_