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

blimp/engine/app/blimp_content_main_delegate.h

 // Copyright 2015 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_APP_BLIMP_CONTENT_MAIN_DELEGATE_H_
 #define BLIMP_ENGINE_APP_BLIMP_CONTENT_MAIN_DELEGATE_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 12 matching lines @@
   ~BlimpContentMainDelegate() override;
 
   BlimpContentBrowserClient* browser_client() { return browser_client_.get(); }
 
   // content::ContentMainDelegate implementation.
   bool BasicStartupComplete(int* exit_code) override;
   void PreSandboxStartup() override;
   content::ContentBrowserClient* CreateContentBrowserClient() override;
   content::ContentRendererClient* CreateContentRendererClient() override;
 
+ protected:
+  void SetContentBrowserClientForTesting(
+      std::unique_ptr<BlimpContentBrowserClient> browser_client_ptr);
+
  private:
   void InitializeResourceBundle();
 
   std::unique_ptr<BlimpContentBrowserClient> browser_client_;
   std::unique_ptr<BlimpContentRendererClient> renderer_client_;
   BlimpContentClient content_client_;
 
   DISALLOW_COPY_AND_ASSIGN(BlimpContentMainDelegate);
 };
 
 }  // namespace engine
 }  // namespace blimp
 
 #endif  // BLIMP_ENGINE_APP_BLIMP_CONTENT_MAIN_DELEGATE_H_