Implement PushManager#hasPermission

chrome/browser/content_settings/permission_context_base.cc

Index: chrome/browser/content_settings/permission_context_base.cc
diff --git a/chrome/browser/content_settings/permission_context_base.cc b/chrome/browser/content_settings/permission_context_base.cc
index 217316266d645d31ee8fca294e8bbade453f3a53..1cd13fba9837926199f86cb668549a07b0b57e43 100644
--- a/chrome/browser/content_settings/permission_context_base.cc
+++ b/chrome/browser/content_settings/permission_context_base.cc
@@ -48,6 +48,13 @@ void PermissionContextBase::RequestPermission(
                    callback);
 }
 
+ContentSetting PermissionContextBase::GetPermissionStatus(
+    const GURL& requesting_origin,
+    const GURL& embedding_origin) const {
+  return profile_->GetHostContentSettingsMap()->GetContentSetting(
+      requesting_origin, embedding_origin, permission_type_, std::string());
+}
+
 void PermissionContextBase::CancelPermissionRequest(
     content::WebContents* web_contents,
     const PermissionRequestID& id) {