Revert 192940 "Delete CopyRecursiveDirNoCache from test_file_util."

trunk/src/base/test/test_file_util.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 BASE_TEST_TEST_FILE_UTIL_H_
 #define BASE_TEST_TEST_FILE_UTIL_H_
 
 // File utility functions used only by tests.
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace file_util {
 
 // Wrapper over file_util::Delete. On Windows repeatedly invokes Delete in case
 // of failure to workaround Windows file locking semantics. Returns true on
 // success.
 bool DieFileDie(const base::FilePath& file, bool recurse);
 
 // Clear a specific file from the system cache. After this call, trying
 // to access this file will result in a cold load from the hard drive.
 bool EvictFileFromSystemCache(const base::FilePath& file);
 
+// Like CopyFileNoCache but recursively copies all files and subdirectories
+// in the given input directory to the output directory. Any files in the
+// destination that already exist will be overwritten.
+//
+// Returns true on success. False means there was some error copying, so the
+// state of the destination is unknown.
+bool CopyRecursiveDirNoCache(const base::FilePath& source_dir,
+                             const base::FilePath& dest_dir);
+
 #if defined(OS_WIN)
 // Returns true if the volume supports Alternate Data Streams.
 bool VolumeSupportsADS(const base::FilePath& path);
 
 // Returns true if the ZoneIdentifier is correctly set to "Internet" (3).
 // Note that this function must be called from the same process as
 // the one that set the zone identifier.  I.e. don't use it in UI/automation
 // based tests.
 bool HasInternetZoneIdentifier(const base::FilePath& full_path);
 #endif  // defined(OS_WIN)
@@ skipping 19 matching lines @@
   const base::FilePath path_;
   void* info_;  // The opaque stored permission information.
   size_t length_;  // The length of the stored permission information.
 
   DISALLOW_COPY_AND_ASSIGN(PermissionRestorer);
 };
 
 }  // namespace file_util
 
 #endif  // BASE_TEST_TEST_FILE_UTIL_H_