Convert ARRAYSIZE_UNSAFE -> arraysize in chrome/browser/.

[email protected]
BUG=423134

Review URL: https://codereview.chromium.org/655413002

Cr-Commit-Position: refs/heads/master@{#299837}
diff --git a/chrome/browser/extensions/extension_protocols_unittest.cc b/chrome/browser/extensions/extension_protocols_unittest.cc
index e9b3888..897fee71 100644
--- a/chrome/browser/extensions/extension_protocols_unittest.cc
+++ b/chrome/browser/extensions/extension_protocols_unittest.cc
@@ -172,7 +172,7 @@
     {"split enabled", true, true, true, true},
   };
 
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
+  for (size_t i = 0; i < arraysize(cases); ++i) {
     scoped_refptr<Extension> extension =
         CreateTestExtension(cases[i].name, cases[i].incognito_split_mode);
     extension_info_map_->AddExtension(