Add more string_util functions to base namespace.

net/base/filename_util_internal.cc

 // Copyright 2014 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.
 
 #include "net/base/filename_util.h"
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 23 matching lines @@
     if (filename->empty())
       return;
     size_t trimmed = length - filename->size();
     if (trimmed)
       filename->insert(filename->end(), trimmed, kReplace[0]);
   }
   base::TrimString(*filename, FILE_PATH_LITERAL("."), filename);
   if (filename->empty())
     return;
   // Replace any path information by changing path separators.
-  ReplaceSubstringsAfterOffset(filename, 0, FILE_PATH_LITERAL("/"), kReplace);
-  ReplaceSubstringsAfterOffset(filename, 0, FILE_PATH_LITERAL("\\"), kReplace);
+  base::ReplaceSubstringsAfterOffset(
+      filename, 0, FILE_PATH_LITERAL("/"), kReplace);
+  base::ReplaceSubstringsAfterOffset(
+      filename, 0, FILE_PATH_LITERAL("\\"), kReplace);
 }
 
 // Returns the filename determined from the last component of the path portion
 // of the URL.  Returns an empty string if the URL doesn't have a path or is
 // invalid. If the generated filename is not reliable,
 // |should_overwrite_extension| will be set to true, in which case a better
 // extension should be determined based on the content type.
 std::string GetFileNameFromURL(const GURL& url,
                                const std::string& referrer_charset,
                                bool* should_overwrite_extension) {
@@ skipping 262 matching lines @@
   base::FilePath generated_name(
       base::SysWideToNativeMB(base::UTF16ToWide(file_name)));
 #endif
 
   DCHECK(!generated_name.empty());
 
   return generated_name;
 }
 
 }  // namespace net