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

net/tools/quic/quic_in_memory_cache.cc

Index: net/tools/quic/quic_in_memory_cache.cc
diff --git a/net/tools/quic/quic_in_memory_cache.cc b/net/tools/quic/quic_in_memory_cache.cc
index 392a848b48c1f3c76db39f361ed5c17b19bb5137..5635f71ec0d4539edf8ea7cda600cfd7efa06b18 100644
--- a/net/tools/quic/quic_in_memory_cache.cc
+++ b/net/tools/quic/quic_in_memory_cache.cc
@@ -266,7 +266,7 @@ void QuicInMemoryCache::InitializeFromDirectory(const string& cache_directory) {
     resource_file->SetHostPathFromBase(base);
     resource_file->Read();
 
-    AddResponse(resource_file->host(), resource_file->path(),
+    AddResponse(resource_file->host(), resource_file->path().as_string(),
                 resource_file->spdy_headers().Clone(), resource_file->body());
 
     resource_files.push_back(std::move(resource_file));
@@ -276,7 +276,8 @@ void QuicInMemoryCache::InitializeFromDirectory(const string& cache_directory) {
     std::list<ServerPushInfo> push_resources;
     for (const auto& push_url : resource_file->push_urls()) {
       GURL url(push_url);
-      const Response* response = GetResponse(url.host(), url.path());
+      const Response* response =
+          GetResponse(url.host(), url.path().as_string());
       if (!response) {
         QUIC_BUG << "Push URL '" << push_url << "' not found.";
         return;
@@ -285,7 +286,8 @@ void QuicInMemoryCache::InitializeFromDirectory(const string& cache_directory) {
                                               net::kV3LowestPriority,
                                               response->body().as_string()));
     }
-    MaybeAddServerPushResources(resource_file->host(), resource_file->path(),
+    MaybeAddServerPushResources(resource_file->host(),
+                                resource_file->path().as_string(),
                                 push_resources);
   }
 }
@@ -360,7 +362,7 @@ void QuicInMemoryCache::MaybeAddServerPushResources(
     if (host.empty()) {
       host = request_host.as_string();
     }
-    string path = push_resource.request_url.path();
+    string path = push_resource.request_url.path().as_string();
     bool found_existing_response = false;
     {
       base::AutoLock lock(response_mutex_);