Remove all blimp client code.

blimp/client/core/contents/fake_navigation_feature.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_CLIENT_CORE_CONTENTS_FAKE_NAVIGATION_FEATURE_H_
-#define BLIMP_CLIENT_CORE_CONTENTS_FAKE_NAVIGATION_FEATURE_H_
-
-#include <string>
-
-#include "blimp/client/core/contents/navigation_feature.h"
-#include "testing/gmock/include/gmock/gmock.h"
-
-namespace blimp {
-namespace client {
-
-class FakeNavigationFeature : public NavigationFeature {
- public:
-  FakeNavigationFeature();
-  ~FakeNavigationFeature();
-
-  MOCK_METHOD1(Reload, void(int tab_id));
-  MOCK_METHOD1(GoBack, void(int tab_id));
-  MOCK_METHOD1(GoForward, void(int tab_id));
-
-  void NavigateToUrlText(int tab_id, const std::string& url_text) override;
-
- private:
-  // For mimicing asynchronous invocation of delegate from NavigateToUrlText.
-  void NotifyDelegateURLLoaded(int tab_id, const std::string& url_text);
-
-  DISALLOW_COPY_AND_ASSIGN(FakeNavigationFeature);
-};
-
-}  // namespace client
-}  // namespace blimp
-
-#endif  // BLIMP_CLIENT_CORE_CONTENTS_FAKE_NAVIGATION_FEATURE_H_