Add FilePath to base namespace.

chrome/browser/safe_browsing/prefix_set.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.
 //
 // A read-only set implementation for |SBPrefix| items.  Prefixes are
 // sorted and stored as 16-bit deltas from the previous prefix.  An
 // index structure provides quick random access, and also handles
 // cases where 16 bits cannot encode a delta.
 //
 // For example, the sequence {20, 25, 41, 65432, 150000, 160000} would
@@ skipping 35 matching lines @@
 //     m * 2 byte |&deltas_[0]..&deltas_[m]|
 //        16 byte digest
 
 #ifndef CHROME_BROWSER_SAFE_BROWSING_PREFIX_SET_H_
 #define CHROME_BROWSER_SAFE_BROWSING_PREFIX_SET_H_
 
 #include <vector>
 
 #include "chrome/browser/safe_browsing/safe_browsing_util.h"
 
+namespace base {
 class FilePath;
+}
 
 namespace safe_browsing {
 
 class PrefixSet {
  public:
   explicit PrefixSet(const std::vector<SBPrefix>& sorted_prefixes);
   ~PrefixSet();
 
   // |true| if |prefix| was in |prefixes| passed to the constructor.
   bool Exists(SBPrefix prefix) const;
 
   // Persist the set on disk.
-  static PrefixSet* LoadFile(const FilePath& filter_name);
-  bool WriteFile(const FilePath& filter_name) const;
+  static PrefixSet* LoadFile(const base::FilePath& filter_name);
+  bool WriteFile(const base::FilePath& filter_name) const;
 
   // Regenerate the vector of prefixes passed to the constructor into
   // |prefixes|.  Prefixes will be added in sorted order.
   void GetPrefixes(std::vector<SBPrefix>* prefixes) const;
 
  private:
   // Maximum number of consecutive deltas to encode before generating
   // a new index entry.  This helps keep the worst-case performance
   // for |Exists()| under control.
   static const size_t kMaxRun = 100;
@@ skipping 13 matching lines @@
   // prefixes.  Deltas are only valid between consecutive items from
   // |index_|, or the end of |deltas_| for the last |index_| pair.
   std::vector<uint16> deltas_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefixSet);
 };
 
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_PREFIX_SET_H_