Move more string_util functions to base namespace.

components/resource_provider/file_utils.cc

 // Copyright 2015 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 "components/resource_provider/file_utils.h"
 
 #include "base/files/file_path.h"
 #include "base/path_service.h"
 #include "base/strings/string_util.h"
 #include "url/gurl.h"
 
 namespace resource_provider {
 namespace {
 
 bool IsPathNameValid(const std::string& name) {
   if (name.empty() || name == "." || name == "..")
     return false;
 
   for (auto c : name) {
-    if (!IsAsciiAlpha(c) && !IsAsciiDigit(c) && c != '_' && c != '.')
+    if (!base::IsAsciiAlpha(c) && !base::IsAsciiDigit(c) &&
+        c != '_' && c != '.')
       return false;
   }
   return true;
 }
 
 }  // namespace
 
 base::FilePath GetPathForApplicationUrl(const GURL& application_url) {
   if (application_url.scheme() != "mojo")
     return base::FilePath();
@@ skipping 34 matching lines @@
   base::FilePath result(app_path);
   for (const auto& path_component : path_components) {
     if (!IsPathNameValid(path_component))
       return base::FilePath();
     result = result.AppendASCII(path_component);
   }
   return result;
 }
 
 }  // namespace resource_provider