Add FilePath to base namespace.

chrome/browser/history/in_memory_history_backend.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.
 
 // Contains the history backend wrapper around the in-memory URL database. This
 // object maintains an in-memory cache of the subset of history required to do
 // in-line autocomplete.
 //
 // It is created on the history thread and passed to the main thread where
 // operations can be completed synchronously. It listens for notifications
 // from the "regular" history backend and keeps itself in sync.
 
 #ifndef CHROME_BROWSER_HISTORY_IN_MEMORY_HISTORY_BACKEND_H_
 #define CHROME_BROWSER_HISTORY_IN_MEMORY_HISTORY_BACKEND_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
-class FilePath;
 class GURL;
 class Profile;
 
+namespace base {
+class FilePath;
+}
+
 namespace history {
 
 class InMemoryDatabase;
 class InMemoryURLIndex;
 struct KeywordSearchTermDetails;
 class URLDatabase;
 struct URLsDeletedDetails;
 struct URLsModifiedDetails;
 
 class InMemoryHistoryBackend : public content::NotificationObserver {
  public:
   InMemoryHistoryBackend();
   virtual ~InMemoryHistoryBackend();
 
   // Initializes the backend from the history database pointed to by the
   // full path in |history_filename|. |db| is used for setting up the
   // InMemoryDatabase.
-  bool Init(const FilePath& history_filename, URLDatabase* db);
+  bool Init(const base::FilePath& history_filename, URLDatabase* db);
 
   // Does initialization work when this object is attached to the history
   // system on the main thread. The argument is the profile with which the
   // attached history service is under.
   void AttachToHistoryService(Profile* profile);
 
   // Returns the underlying database associated with this backend. The current
   // autocomplete code was written fro this, but it should probably be removed
   // so that it can deal directly with this object, rather than the DB.
   InMemoryDatabase* db() const {
@@ skipping 27 matching lines @@
   // The profile that this object is attached. May be NULL before
   // initialization.
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(InMemoryHistoryBackend);
 };
 
 }  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_IN_MEMORY_HISTORY_BACKEND_H_