Skip flushes on icon writes for 10x better jumplist perf

chrome/browser/jumplist_win.cc

Index: chrome/browser/jumplist_win.cc
diff --git a/chrome/browser/jumplist_win.cc b/chrome/browser/jumplist_win.cc
index 9ea1f9805d124a3735fa2a1b826a63d5584bc5b2..91e536f383df87881319fcc52555243db52f4456 100644
--- a/chrome/browser/jumplist_win.cc
+++ b/chrome/browser/jumplist_win.cc
@@ -82,7 +82,8 @@ bool CreateIconFile(const SkBitmap& bitmap,
   // save it as the temporary file.
   gfx::ImageFamily image_family;
   image_family.Add(gfx::Image::CreateFrom1xBitmap(bitmap));
-  if (!IconUtil::CreateIconFileFromImageFamily(image_family, path))
+  if (!IconUtil::CreateIconFileFromImageFamily(image_family, path,
+                                               IconUtil::NORMAL_WRITE))
     return false;
 
   // Add this icon file to the list and return its absolute path.