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

chrome/renderer/extensions/webstore_bindings.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/extensions/webstore_bindings.h"
 
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "base/strings/string_util.h"
@@ skipping 145 matching lines @@
     }
 
     if (webstore_url.scheme() != webstore_base_url.scheme() ||
         webstore_url.host() != webstore_base_url.host() ||
         !base::StartsWith(webstore_url.path(), webstore_base_url.path(),
                           base::CompareCase::SENSITIVE)) {
       *error = kInvalidWebstoreItemUrlError;
       return false;
     }
 
-    std::string candidate_webstore_item_id = webstore_url.path().substr(
-        webstore_base_url.path().length());
+    std::string candidate_webstore_item_id =
+        webstore_url.path()
+            .substr(webstore_base_url.path().length())
+            .as_string();
     if (!crx_file::id_util::IdIsValid(candidate_webstore_item_id)) {
       *error = kInvalidWebstoreItemUrlError;
       return false;
     }
 
     std::string reconstructed_webstore_item_url_string =
         extension_urls::GetWebstoreItemDetailURLPrefix() +
             candidate_webstore_item_id;
     if (reconstructed_webstore_item_url_string != webstore_url_string) {
       *error = kInvalidWebstoreItemUrlError;
@@ skipping 65 matching lines @@
   v8::Isolate* isolate = context()->isolate();
   v8::HandleScope handle_scope(isolate);
   v8::Context::Scope context_scope(context()->v8_context());
   v8::Local<v8::Value> argv[] = {
       v8::Number::New(isolate, percent_downloaded / 100.0)};
   context()->module_system()->CallModuleMethodSafe(
       "webstore", "onDownloadProgress", arraysize(argv), argv);
 }
 
 }  // namespace extensions