Update TaskTraits in google_brand_chromeos.cc.

chrome/browser/google/google_brand_chromeos.cc

Index: chrome/browser/google/google_brand_chromeos.cc
diff --git a/chrome/browser/google/google_brand_chromeos.cc b/chrome/browser/google/google_brand_chromeos.cc
index 87a732265eaeb98592f23d516554d18c3f48cf5a..58cd28beb983540229bfd1a9c454840a0ff9557c 100644
--- a/chrome/browser/google/google_brand_chromeos.cc
+++ b/chrome/browser/google/google_brand_chromeos.cc
@@ -79,7 +79,7 @@ void InitBrand(const base::Closure& callback) {
                      .WithShutdownBehavior(
                          base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)
                      .WithPriority(base::TaskPriority::BACKGROUND)
-                     .WithFileIO(),
+                     .MayBlock(),
       base::Bind(&ReadBrandFromFile), base::Bind(&SetBrand, callback));
 }