[Blimp] Refactor Blimp test engine with embedded test server and URL rewriting

blimp/engine/testing/app/test_blimp_browser_main_parts.h

Index: blimp/engine/testing/app/test_blimp_browser_main_parts.h
diff --git a/blimp/engine/testing/app/test_blimp_browser_main_parts.h b/blimp/engine/testing/app/test_blimp_browser_main_parts.h
new file mode 100644
index 0000000000000000000000000000000000000000..79a37600ce69f9b2d21bfc28249c9881f3f316e0
--- /dev/null
+++ b/blimp/engine/testing/app/test_blimp_browser_main_parts.h
@@ -0,0 +1,48 @@
+// 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_ENGINE_TESTING_APP_TEST_BLIMP_BROWSER_MAIN_PARTS_H_
+#define BLIMP_ENGINE_TESTING_APP_TEST_BLIMP_BROWSER_MAIN_PARTS_H_
+
+#include "blimp/engine/app/blimp_browser_main_parts.h"
+
+namespace net {
+class NetLog;
+}
+
+namespace content {
+struct MainFunctionParams;
+}
+
+namespace blimp {
+namespace engine {
+
+class BlimpEngineConfig;
+
+// Blimp testing implementation of BrowserMainParts. Class to extend
+// class BlimpBrowserMainParts for testing. I.e. This overrides method
+// PreMainMessageLoopRun(), replacing the use of BlimpEngineSession
+// by enabling TestBlimpEngineSession.
+class TestBlimpBrowserMainParts : public BlimpBrowserMainParts {
+ public:
+  explicit TestBlimpBrowserMainParts(
+      const content::MainFunctionParams& parameters);
+  ~TestBlimpBrowserMainParts() = default;
+
+  // BlimpBrowserMainParts implementation.
+  void PreEarlyInitialization() override;
+  void PreMainMessageLoopRun() override;
+  void PostMainMessageLoopRun() override;
+
+ private:
+  std::unique_ptr<BlimpEngineConfig> engine_config_;
+  std::unique_ptr<net::NetLog> net_log_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestBlimpBrowserMainParts);
+};
+
+}  // namespace engine
+}  // namespace blimp
+
+#endif  // BLIMP_ENGINE_TESTING_APP_TEST_BLIMP_BROWSER_MAIN_PARTS_H_