For PWG raster file creation, use FLAG_WRITE instead of FLAG_APPEND

chrome/browser/local_discovery/pwg_raster_converter.cc

Index: chrome/browser/local_discovery/pwg_raster_converter.cc
diff --git a/chrome/browser/local_discovery/pwg_raster_converter.cc b/chrome/browser/local_discovery/pwg_raster_converter.cc
index 0f39430ba201d7f90f4439e64ab0a3fc6e3db5cc..b912f382bd8bbca142960ea93d8b1419f7bc1ce9 100644
--- a/chrome/browser/local_discovery/pwg_raster_converter.cc
+++ b/chrome/browser/local_discovery/pwg_raster_converter.cc
@@ -76,9 +76,8 @@ void FileHandlers::Init(base::RefCountedMemory* data) {
   // Reopen in read only mode.
   pdf_file_.Initialize(GetPdfPath(),
                        base::File::FLAG_OPEN | base::File::FLAG_READ);
-  pwg_file_.Initialize(
-      GetPwgPath(),
-      base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_APPEND);
+  pwg_file_.Initialize(GetPwgPath(),
+                       base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_WRITE);
 }
 
 bool FileHandlers::IsValid() {