Add FilePath to base namespace.

sql/connection.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 SQL_CONNECTION_H_
 #define SQL_CONNECTION_H_
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/time.h"
 #include "sql/sql_export.h"
 
-class FilePath;
 struct sqlite3;
 struct sqlite3_stmt;
 
+namespace base {
+class FilePath;
+}
+
 namespace sql {
 
 class Statement;
 
 // Uniquely identifies a statement. There are two modes of operation:
 //
 // - In the most common mode, you will use the source file and line number to
 //   identify your statement. This is a convienient way to get uniqueness for
 //   a statement that is only used in one place. Use the SQL_FROM_HERE macro
 //   to generate a StatementID.
@@ skipping 113 matching lines @@
   // enum histogram "Sqlite.Error".  Setting this additionally logs
   // errors to the histogram |name|.
   void set_error_histogram_name(const std::string& name) {
     error_histogram_name_ = name;
   }
 
   // Initialization ------------------------------------------------------------
 
   // Initializes the SQL connection for the given file, returning true if the
   // file could be opened. You can call this or OpenInMemory.
-  bool Open(const FilePath& path) WARN_UNUSED_RESULT;
+  bool Open(const base::FilePath& path) WARN_UNUSED_RESULT;
 
   // Initializes the SQL connection for a temporary in-memory database. There
   // will be no associated file on disk, and the initial database will be
   // empty. You can call this or Open.
   bool OpenInMemory() WARN_UNUSED_RESULT;
 
   // Returns trie if the database has been successfully opened.
   bool is_open() const { return !!db_; }
 
   // Closes the database. This is automatically performed on destruction for
@@ skipping 299 matching lines @@
 
   // Auxiliary error-code histogram.
   std::string error_histogram_name_;
 
   DISALLOW_COPY_AND_ASSIGN(Connection);
 };
 
 }  // namespace sql
 
 #endif  // SQL_CONNECTION_H_