Moving utility methods in data_reduction_proxy to util namespace

components/data_reduction_proxy/core/common/data_reduction_proxy_util.cc

Index: components/data_reduction_proxy/core/common/data_reduction_proxy_util.cc
diff --git a/components/data_reduction_proxy/core/common/data_reduction_proxy_util.cc b/components/data_reduction_proxy/core/common/data_reduction_proxy_util.cc
index ab3844578dc3a053f4d91d70b65ed985d800ec9d..b691faf0b538ca80680385d7c864e1e4b942d37e 100644
--- a/components/data_reduction_proxy/core/common/data_reduction_proxy_util.cc
+++ b/components/data_reduction_proxy/core/common/data_reduction_proxy_util.cc
@@ -16,20 +16,22 @@
 namespace data_reduction_proxy {
 
 namespace {
 
 #if defined(USE_GOOGLE_API_KEYS)
 // Used in all Data Reduction Proxy URLs to specify API Key.
 const char kApiKeyName[] = "key";
 #endif
 }  // namespace
 
+namespace util {
+
 bool IsMethodIdempotent(const std::string& method) {
   return method == "GET" || method == "OPTIONS" || method == "HEAD" ||
          method == "PUT" || method == "DELETE" || method == "TRACE";
 }
 
 GURL AddApiKeyToUrl(const GURL& url) {
   GURL new_url = url;
 #if defined(USE_GOOGLE_API_KEYS)
   std::string api_key = google_apis::GetAPIKey();
   if (google_apis::HasKeysConfigured() && !api_key.empty()) {
@@ -51,20 +53,22 @@ bool ApplyProxyConfigToProxyInfo(const net::ProxyConfig& proxy_config,
                                  const GURL& url,
                                  net::ProxyInfo* data_reduction_proxy_info) {
   DCHECK(data_reduction_proxy_info);
   if (!proxy_config.is_valid())
     return false;
   proxy_config.proxy_rules().Apply(url, data_reduction_proxy_info);
   data_reduction_proxy_info->DeprioritizeBadProxies(proxy_retry_info);
   return !data_reduction_proxy_info->proxy_server().is_direct();
 }
 
+}  // namespace util
+
 namespace protobuf_parser {
 
 net::ProxyServer::Scheme SchemeFromProxyScheme(
     ProxyServer_ProxyScheme proxy_scheme) {
   switch (proxy_scheme) {
     case ProxyServer_ProxyScheme_HTTP:
       return net::ProxyServer::SCHEME_HTTP;
     case ProxyServer_ProxyScheme_HTTPS:
       return net::ProxyServer::SCHEME_HTTPS;
     case ProxyServer_ProxyScheme_QUIC: