Index: extensions/browser/preload_check.h |
diff --git a/extensions/browser/preload_check.h b/extensions/browser/preload_check.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..3db9a374a3203843a5e2e430457301695f24636c |
--- /dev/null |
+++ b/extensions/browser/preload_check.h |
@@ -0,0 +1,57 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef EXTENSIONS_BROWSER_PRELOAD_CHECK_H_ |
+#define EXTENSIONS_BROWSER_PRELOAD_CHECK_H_ |
+ |
+#include <memory> |
Devlin
2017/03/16 01:42:44
Needed?
michaelpg
2017/03/17 02:34:26
Done.
|
+#include <set> |
+#include <utility> |
Devlin
2017/03/16 01:42:44
needed?
michaelpg
2017/03/17 02:34:26
Done.
|
+ |
+#include "base/callback.h" |
+#include "base/macros.h" |
+#include "base/memory/ref_counted.h" |
+#include "base/strings/string16.h" |
+#include "extensions/common/extension.h" |
Devlin
2017/03/16 01:42:44
nit: forward declaration instead of this include
michaelpg
2017/03/17 02:34:26
Done.
|
+ |
+namespace extensions { |
+ |
+// Encapsulates a possibly asynchronous operation to verify whether a |
+// precondition holds for loading the given extension. |
+class PreloadCheck { |
+ public: |
+ // These enumerators should only be referred to by name, so it is safe to |
+ // insert or remove values as necessary. |
+ enum Error { |
+ NONE, |
+ BLACKLISTED_ID, |
+ BLACKLISTED_UNKNOWN, |
+ DISALLOWED_BY_POLICY, |
+ }; |
+ |
+ using Errors = std::set<Error>; |
+ using ResultCallback = base::OnceCallback<void(Errors)>; |
+ |
+ explicit PreloadCheck(scoped_refptr<const Extension> extension); |
+ virtual ~PreloadCheck(); |
+ |
+ // This function must be called on the UI thread. The callback also occurs on |
+ // the UI thread. |
+ virtual void Start(ResultCallback callback) = 0; |
+ |
+ // Subclasses may provide an error message. |
+ virtual base::string16 GetErrorMessage() const; |
+ |
+ const Extension* extension() { return extension_.get(); } |
+ |
+ private: |
+ // The extension to check. |
+ scoped_refptr<const Extension> extension_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(PreloadCheck); |
+}; |
+ |
+} // namespace extensions |
+ |
+#endif // EXTENSIONS_BROWSER_PRELOAD_CHECK_H_ |