Partially componentize //chrome/browser/search/search.{h,cc}

ios/public/test/fake_search_provider.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 IOS_PUBLIC_TEST_FAKE_SEARCH_PROVIDER_H_
-#define IOS_PUBLIC_TEST_FAKE_SEARCH_PROVIDER_H_
-
-#include "ios/public/provider/chrome/browser/search_provider.h"
-
-namespace ios {
-
-class FakeSearchProvider : public ios::SearchProvider {
- public:
-  FakeSearchProvider();
-  ~FakeSearchProvider() override;
-
- private:
-  // ios::SearchProvider implementation.
-  bool IsQueryExtractionEnabled() override;
-  std::string InstantExtendedEnabledParam(bool for_search) override;
-  std::string ForceInstantResultsParam(bool for_prerender) override;
-  int OmniboxStartMargin() override;
-
-  DISALLOW_COPY_AND_ASSIGN(FakeSearchProvider);
-};
-
-}  // namespace ios
-
-#endif  // IOS_PUBLIC_TEST_FAKE_SEARCH_PROVIDER_H_