[Blimp] Adds blimp engine browser test framework and LoadUrl test.

blimp/test/blimp_browser_test.h

+// Copyright 2016 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 BLIMP_TEST_BLIMP_BROWSER_TEST_H_
+#define BLIMP_TEST_BLIMP_BROWSER_TEST_H_
+
+#include <memory>
+#include "content/public/test/browser_test_base.h"
+
+namespace base {
+class RunLoop;
+}
+
+namespace content {
+class WebContents;
+}
+
+namespace blimp {
+
+// Base class for tests which require a full instance of the blimp engine.
+class BlimpBrowserTest : public content::BrowserTestBase {
+ public:
+  // Notify that an asynchronous test is now complete and the test runner should
+  // exit.
+  void FinishAsynchronousTest();
+
+ protected:
+  BlimpBrowserTest();
+  ~BlimpBrowserTest() override;
+
+  // testing::Test implementation.
+  void SetUp() override;
+
+  // content::BrowserTestBase implementation.
+  void RunTestOnMainThreadLoop() override;
+  void SetUpOnMainThread() override;
+  void TearDownOnMainThread() override;
+  void SetUpCommandLine(base::CommandLine* command_line) override;
+
+  // Run an asynchronous test in a nested run loop. The caller should call
+  // FinishAsynchronousTest() to notify that the test should finish.
+  void RunAsynchronousTest();
+
+ private:
+  std::unique_ptr<base::RunLoop> run_loop_;
+
+  DISALLOW_COPY_AND_ASSIGN(BlimpBrowserTest);
+};
+
+}  // namespace blimp
+
+#endif  // BLIMP_TEST_BLIMP_BROWSER_TEST_H_