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

shell/application_manager/local_fetcher.cc

Index: shell/application_manager/local_fetcher.cc
diff --git a/shell/application_manager/local_fetcher.cc b/shell/application_manager/local_fetcher.cc
index ce753853dc976a82efe4f24d7a30eb9024822314..cc2989dbf05479a7794389893e2d637e2fc3564a 100644
--- a/shell/application_manager/local_fetcher.cc
+++ b/shell/application_manager/local_fetcher.cc
@@ -59,8 +59,13 @@ mojo::URLResponsePtr LocalFetcher::AsURLResponse(base::TaskRunner* task_runner,
   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 =
@@ -69,8 +74,9 @@ mojo::URLResponsePtr LocalFetcher::AsURLResponse(base::TaskRunner* task_runner,
     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,