Sanitize enclosing quotes around paths in policies.

chrome/browser/policy/policy_path_parser_posix.cc

Index: chrome/browser/policy/policy_path_parser_posix.cc
diff --git a/chrome/browser/policy/policy_path_parser_posix.cc b/chrome/browser/policy/policy_path_parser_posix.cc
index 6b9df82305114fc2d4bb532f88a28d3ea9162da5..2f9ea26b5df1e0c952da2570c43ad81bcc47ba7e 100644
--- a/chrome/browser/policy/policy_path_parser_posix.cc
+++ b/chrome/browser/policy/policy_path_parser_posix.cc
@@ -20,6 +20,15 @@ const char* kUserNamePolicyVarName = "${user_name}";
 FilePath::StringType ExpandPathVariables(
     const FilePath::StringType& untranslated_string) {
   FilePath::StringType result(untranslated_string);
+  if (result.length() == 0)
+    return result;
+  // Sanitize quotes in case of any around the whole string.
+  if (result.length() > 1 &&
+      ((result[0] == '"' && result[result.length() - 1] == '"') ||
+      (result[0] == '\'' && result[result.length() - 1] == '\''))) {
+    // Strip first and last char which should be matching quotes now.
+    result = result.substr(1, result.length() - 2);
+  }
   // Translate two special variables ${user_name} and ${machine_name}
   size_t position = result.find(kUserNamePolicyVarName);
   if (position != std::string::npos) {