Allow building mojo_shell and non-graphical apps/services on a Mac

shell/application_manager/local_fetcher.cc

 // Copyright 2015 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 "shell/application_manager/local_fetcher.h"
 
 #include <sys/stat.h>
 
 #include "base/bind.h"
 #include "base/files/file_enumerator.h"
@@ skipping 41 matching lines @@
 GURL LocalFetcher::GetRedirectURL() const {
   return GURL::EmptyGURL();
 }
 
 mojo::URLResponsePtr LocalFetcher::AsURLResponse(base::TaskRunner* task_runner,
                                                  uint32_t skip) {
   mojo::URLResponsePtr response(mojo::URLResponse::New());
   response->url = mojo::String::From(url_);
   mojo::DataPipe data_pipe;
   response->body = data_pipe.consumer_handle.Pass();
+#if defined(OS_MACOSX)
+  struct stat stat_result;
+  if (stat(path_.value().c_str(), &stat_result) == 0) {
+#else
   base::stat_wrapper_t stat_result;
   if (stat64(path_.value().c_str(), &stat_result) == 0) {
+#endif
     auto content_length_header = mojo::HttpHeader::New();
     content_length_header->name = "Content-Length";
     content_length_header->value =
         base::StringPrintf("%" PRId64, stat_result.st_size);
     response->headers.push_back(content_length_header.Pass());
     auto etag_header = mojo::HttpHeader::New();
     etag_header->name = "ETag";
     etag_header->value = base::StringPrintf(
-        "\"%" PRId64 "-%" PRId64 "-%" PRId64 "\"", stat_result.st_dev,
-        stat_result.st_ino, static_cast<uint64_t>(stat_result.st_mtime));
+        "\"%" PRId64 "-%" PRId64 "-%" PRId64 "\"",
+        static_cast<uint64_t>(stat_result.st_dev), stat_result.st_ino,
+        static_cast<uint64_t>(stat_result.st_mtime));
     response->headers.push_back(etag_header.Pass());
   }
   mojo::common::CopyFromFile(path_, data_pipe.producer_handle.Pass(), skip,
                              task_runner, base::Bind(&IgnoreResult));
   return response.Pass();
 }
 
 void LocalFetcher::AsPath(
     base::TaskRunner* task_runner,
     base::Callback<void(const base::FilePath&, bool)> callback) {
@@ skipping 16 matching lines @@
   std::string start_of_file;
   ReadFileToString(path_, &start_of_file, kMaxShebangLength);
   size_t return_position = start_of_file.find('\n');
   if (return_position == std::string::npos)
     return false;
   *line = start_of_file.substr(0, return_position + 1);
   return true;
 }
 
 }  // namespace shell