[WIP] make GURL::path() return a StringPiece

components/dom_distiller/core/page_features.cc

Index: components/dom_distiller/core/page_features.cc
diff --git a/components/dom_distiller/core/page_features.cc b/components/dom_distiller/core/page_features.cc
index a222bd3f2d6bd395640fbb018a01d5b7cba39ddf..ecf7d5bf97fac8573229779b471606a08a55f976 100644
--- a/components/dom_distiller/core/page_features.cc
+++ b/components/dom_distiller/core/page_features.cc
@@ -70,7 +70,7 @@ std::vector<double> CalculateDerivedFeatures(bool isOGArticle,
                                              const std::string& innerHTML) {
   // In the training pipeline, the strings are explicitly encoded in utf-8 (as
   // they are here).
-  const std::string& path = url.path();
+  const std::string& path = url.path().as_string();
   int innerTextWords = GetWordCount(innerText);
   int textContentWords = GetWordCount(textContent);
   int innerHTMLWords = GetWordCount(innerHTML);
@@ -196,7 +196,7 @@ std::vector<double> CalculateDerivedFeatures(
     double mozScore,
     double mozScoreAllSqrt,
     double mozScoreAllLinear) {
-  const std::string& path = url.path();
+  const std::string& path = url.path().as_string();
   std::vector<double> features;
   // 'opengraph', opengraph,
   features.push_back(openGraph);