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

components/sync/engine_impl/attachments/attachment_uploader_impl.cc

 // Copyright 2014 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 "components/sync/engine_impl/attachments/attachment_uploader_impl.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/base64.h"
@@ skipping 314 matching lines @@
       url, url_request_context_getter_, attachment, callback, account_id_,
       scopes_, token_service_provider_.get(), raw_store_birthday_,
       weak_ptr_factory_.GetWeakPtr(), model_type_));
   state_map_[unique_id] = std::move(upload_state);
 }
 
 // Static.
 GURL AttachmentUploaderImpl::GetURLForAttachmentId(
     const GURL& sync_service_url,
     const AttachmentId& attachment_id) {
-  std::string path = sync_service_url.path();
+  std::string path = sync_service_url.path().as_string();
   if (path.empty() || *path.rbegin() != '/') {
     path += '/';
   }
   path += kAttachments;
   path += attachment_id.GetProto().unique_id();
   GURL::Replacements replacements;
   replacements.SetPathStr(path);
   return sync_service_url.ReplaceComponents(replacements);
 }
 
@@ skipping 43 matching lines @@
       "%s: %s", kSyncStoreBirthday, encoded_store_birthday.c_str()));
 
   // Use field number to pass ModelType because it's stable and we have server
   // code to decode it.
   const int field_number = GetSpecificsFieldNumberFromModelType(model_type);
   fetcher->AddExtraRequestHeader(
       base::StringPrintf("%s: %d", kSyncDataTypeId, field_number));
 }
 
 }  // namespace syncer