PreloadCheck class for extension pre-install checks

extensions/browser/preload_check_test_util.h

+// 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_TEST_UTIL_H_
+#define EXTENSIONS_BROWSER_PRELOAD_CHECK_TEST_UTIL_H_
+
+#include "base/run_loop.h"
+#include "extensions/browser/preload_check.h"
+
+namespace extensions {
+
+// Provides a callback method for a PreloadCheck that stores its results.
+class PreloadCheckObserver {
+ public:
+  PreloadCheckObserver();
+  virtual ~PreloadCheckObserver();
+
+  virtual void OnCheckComplete(PreloadCheck::Errors errors);
+
+  void Wait() {
+    if (call_count_)
+      return;
+
+    base::RunLoop().RunUntilIdle();

[Devlin, 2017/03/08 03:01:48]

We already have the object file, so may as well move this definition.

[michaelpg, 2017/03/09 01:53:30]

Doh.

+  }
+
+  const PreloadCheck::Errors& errors() const { return errors_; }
+  int call_count() const { return call_count_; }
+
+ private:
+  PreloadCheck::Errors errors_;
+  int call_count_;

[Devlin, 2017/03/08 03:01:49]

DISALLOW_COPY_AND_ASSIGN

[michaelpg, 2017/03/09 01:53:30]

Done.

+};
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_BROWSER_PRELOAD_CHECK_TEST_UTIL_H_