Move path functions from file_util to FilePath object.

chrome/test/mini_installer_test/installer_test_util.cc

Index: chrome/test/mini_installer_test/installer_test_util.cc
diff --git a/chrome/test/mini_installer_test/installer_test_util.cc b/chrome/test/mini_installer_test/installer_test_util.cc
index 2cf45319b489b80150cf573b9821a175808ff029..9c14dab2212dedf707f56482fb2ae330f3ac84bb 100644
--- a/chrome/test/mini_installer_test/installer_test_util.cc
+++ b/chrome/test/mini_installer_test/installer_test_util.cc
@@ -87,13 +87,11 @@ bool GetInstallDirectory(bool system_level,
       BrowserDistribution::GetSpecificDistribution(type);
   *path = installer::GetChromeInstallPath(system_level, dist);
   base::FilePath parent;
-  if (system_level) {
+  if (system_level)
     PathService::Get(base::DIR_PROGRAM_FILES, &parent);
-    return file_util::ContainsPath(parent, *path);
-  } else {
+  else
     PathService::Get(base::DIR_LOCAL_APP_DATA, &parent);
-    return file_util::ContainsPath(parent, *path);
-  }
+  return parent.IsParent(*path);
 }
 
 bool GetInstalledProducts(