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

net/base/sdch_dictionary.cc

Index: net/base/sdch_dictionary.cc
diff --git a/net/base/sdch_dictionary.cc b/net/base/sdch_dictionary.cc
index b8faf552390601da1e31dfe13d229ab60cded96e..4cef2bdabe9b20a8795be48f0512460de62a8b2e 100644
--- a/net/base/sdch_dictionary.cc
+++ b/net/base/sdch_dictionary.cc
@@ -4,6 +4,7 @@
 
 #include "net/base/sdch_dictionary.h"
 
+#include "base/strings/string_util.h"
 #include "base/time/clock.h"
 #include "base/time/default_clock.h"
 #include "base/values.h"
@@ -140,8 +141,8 @@ SdchProblemCode SdchDictionary::CanUse(const GURL& target_url) const {
 }
 
 // static
-bool SdchDictionary::PathMatch(const std::string& path,
-                               const std::string& restriction) {
+bool SdchDictionary::PathMatch(const base::StringPiece& path,
+                               const base::StringPiece& restriction) {
   /*  Must be either:
    *  1. P2 is equal to P1
    *  2. P2 is a prefix of P1 and either the final character in P2 is "/"
@@ -152,7 +153,7 @@ bool SdchDictionary::PathMatch(const std::string& path,
   size_t prefix_length = restriction.size();
   if (prefix_length > path.size())
     return false;  // Can't be a prefix.
-  if (0 != path.compare(0, prefix_length, restriction))
+  if (!base::StartsWith(path, restriction, base::CompareCase::SENSITIVE))
     return false;
   return restriction[prefix_length - 1] == '/' || path[prefix_length] == '/';
 }