Do not use a Blink feature flag for Manifest.

BUG=366145

Review URL: https://codereview.chromium.org/557283002

git-svn-id: svn://svn.chromium.org/blink/trunk@181725 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/html/HTMLLinkElement.cpp

@@ -210,7 +210,7 @@ LinkResource* HTMLLinkElement::linkResourceToProcess()
     if (!m_link) {
         if (m_relAttribute.isImport()) {
             m_link = LinkImport::create(this);
-        } else if (m_relAttribute.isManifest() && RuntimeEnabledFeatures::manifestEnabled()) {
+        } else if (m_relAttribute.isManifest()) {
             m_link = LinkManifest::create(this);
         } else {
             OwnPtrWillBeRawPtr<LinkStyle> link = LinkStyle::create(this);

third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in

@@ -76,7 +76,6 @@ LangAttributeAwareFormControlUI
 LayerSquashing status=stable
 PrefixedEncryptedMedia status=stable
 LocalStorage status=stable
-Manifest status=test
 Media status=stable
 MediaCapture
 MediaController depends_on=Media, status=experimental