Remove all blimp engine code

blimp/engine/app/blimp_content_browser_client.h

-// Copyright (c) 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_BROWSER_CLIENT_H_
-#define BLIMP_ENGINE_APP_BLIMP_CONTENT_BROWSER_CLIENT_H_
-
-#include "base/macros.h"
-#include "content/public/browser/content_browser_client.h"
-
-namespace blimp {
-namespace engine {
-
-class BlimpBrowserMainParts;
-class BlimpBrowserContext;
-
-class BlimpContentBrowserClient : public content::ContentBrowserClient {
- public:
-  BlimpContentBrowserClient();
-  ~BlimpContentBrowserClient() override;
-
-  BlimpBrowserMainParts* blimp_browser_main_parts() {
-    return blimp_browser_main_parts_;
-  }
-
-  // content::ContentBrowserClient implementation.
-  content::BrowserMainParts* CreateBrowserMainParts(
-      const content::MainFunctionParams& parameters) override;
-  void OverrideWebkitPrefs(content::RenderViewHost* render_view_host,
-                           content::WebPreferences* prefs) override;
-  void ExposeInterfacesToRenderer(
-      service_manager::InterfaceRegistry* registry,
-      content::RenderProcessHost* render_process_host) override;
-  std::unique_ptr<base::Value> GetServiceManifestOverlay(
-      base::StringPiece name) override;
-
-  BlimpBrowserContext* GetBrowserContext();
-
- private:
-  // Owned by BrowserMainLoop
-  BlimpBrowserMainParts* blimp_browser_main_parts_ = nullptr;
-
-  DISALLOW_COPY_AND_ASSIGN(BlimpContentBrowserClient);
-};
-
-}  // namespace engine
-}  // namespace blimp
-
-#endif  // BLIMP_ENGINE_APP_BLIMP_CONTENT_BROWSER_CLIENT_H_