Rename StreamlinedHostedApps to NewBookmarkApps in the code.

This feature is now known by the name 'bookmark apps'.

BUG=441127

Review URL: https://codereview.chromium.org/883603002

Cr-Commit-Position: refs/heads/master@{#313370}
diff --git a/chrome/browser/extensions/extension_util.cc b/chrome/browser/extensions/extension_util.cc
index 92d1115..b07ab1c 100644
--- a/chrome/browser/extensions/extension_util.cc
+++ b/chrome/browser/extensions/extension_util.cc
@@ -349,7 +349,7 @@
       IDR_EXTENSION_DEFAULT_ICON);
 }
 
-bool IsStreamlinedHostedAppsEnabled() {
+bool IsNewBookmarkAppsEnabled() {
   return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableNewBookmarkApps);
 }