Add FilePath to base namespace.

chrome/browser/history/in_memory_database.h

 // Copyright (c) 2011 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_IN_MEMORY_DATABASE_H_
 #define CHROME_BROWSER_HISTORY_IN_MEMORY_DATABASE_H_
 
 #include "base/basictypes.h"
 #include "chrome/browser/history/url_database.h"
 #include "sql/connection.h"
 
+namespace base {
 class FilePath;
+}
 
 namespace history {
 
 // Class used for a fast in-memory cache of typed URLs. Used for inline
 // autocomplete since it is fast enough to be called synchronously as the user
 // is typing.
 class InMemoryDatabase : public URLDatabase {
  public:
   InMemoryDatabase();
   virtual ~InMemoryDatabase();
 
   // Creates an empty in-memory database.
   bool InitFromScratch();
 
   // Initializes the database by directly slurping the data from the given
   // file. Conceptually, the InMemoryHistoryBackend should do the populating
   // after this object does some common initialization, but that would be
   // much slower.
-  bool InitFromDisk(const FilePath& history_name);
+  bool InitFromDisk(const base::FilePath& history_name);
 
  protected:
   // Implemented for URLDatabase.
   virtual sql::Connection& GetDB() OVERRIDE;
 
  private:
   // Initializes the database connection, this is the shared code between
   // InitFromScratch() and InitFromDisk() above. Returns true on success.
   bool InitDB();
 
   sql::Connection db_;
 
   DISALLOW_COPY_AND_ASSIGN(InMemoryDatabase);
 };
 
 }  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_IN_MEMORY_DATABASE_H_