Unifying NativeMetafile class interface (as much as possible) for Linux, Mac, Win

printing/pdf_ps_metafile_cairo.cc

Index: printing/pdf_ps_metafile_cairo.cc
diff --git a/printing/pdf_ps_metafile_cairo.cc b/printing/pdf_ps_metafile_cairo.cc
index 8ab925833408d82d2f7bbceeb1bbe136dab6fd5a..defd918166311e2825489f607780588932cb9f15 100644
--- a/printing/pdf_ps_metafile_cairo.cc
+++ b/printing/pdf_ps_metafile_cairo.cc
@@ -217,31 +217,19 @@ bool PdfPsMetafile::GetData(void* dst_buffer, uint32 dst_buffer_size) const {
   return true;
 }
 
-bool PdfPsMetafile::SaveTo(const base::FileDescriptor& fd) const {
+bool PdfPsMetafile::SaveTo(const FilePath& file_path) const {
   // We need to check at least these two members to ensure that either Init()
   // has been called to initialize |data_|, or metafile has been closed.
   DCHECK(!context_);
   DCHECK(!data_.empty());
 
-  if (fd.fd < 0) {
-    DLOG(ERROR) << "Invalid file descriptor!";
-    return false;
-  }
-
   bool success = true;
-  if (file_util::WriteFileDescriptor(fd.fd, data_.data(),
-                                     GetDataSize()) < 0) {
-    DLOG(ERROR) << "Failed to save file with fd " << fd.fd;
+  if (file_util::WriteFile(file_path,
+                           data_.data(),
+                           GetDataSize()) < 0) {
+    DLOG(ERROR) << "Failed to save file " << file_path.value().c_str();
     success = false;
   }
-
-  if (fd.auto_close) {
-    if (HANDLE_EINTR(close(fd.fd)) < 0) {
-      DPLOG(WARNING) << "close";
-      success = false;
-    }
-  }
-
   return success;
 }