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

ios/public/test/fake_search_provider.h

Index: ios/public/test/fake_search_provider.h
diff --git a/ios/public/test/fake_search_provider.h b/ios/public/test/fake_search_provider.h
index 04879510d46cd1608827e657e6a6d985fce9cbf8..2b5cac33d6bfe390a3587bb08a1eefe0dd7a5633 100644
--- a/ios/public/test/fake_search_provider.h
+++ b/ios/public/test/fake_search_provider.h
@@ -16,10 +16,6 @@ class FakeSearchProvider : public ios::SearchProvider {
 
  private:
   // ios::SearchProvider implementation.
-  bool IsQueryExtractionEnabled() override;
-  std::string InstantExtendedEnabledParam(bool for_search) override;
-  std::string ForceInstantResultsParam(bool for_prerender) override;
-  int OmniboxStartMargin() override;
   std::string GoogleImageSearchSource() override;
 
   DISALLOW_COPY_AND_ASSIGN(FakeSearchProvider);