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

ios/public/provider/chrome/browser/search_provider.h

Index: ios/public/provider/chrome/browser/search_provider.h
diff --git a/ios/public/provider/chrome/browser/search_provider.h b/ios/public/provider/chrome/browser/search_provider.h
index cb639bf4feb8f9ef4838487dc52bf52bc9f93d84..76b959208d95d8ef931ff222fc2f03958f90b4d1 100644
--- a/ios/public/provider/chrome/browser/search_provider.h
+++ b/ios/public/provider/chrome/browser/search_provider.h
@@ -17,30 +17,6 @@ class SearchProvider {
   SearchProvider() {}
   virtual ~SearchProvider() {}
 
-  // Returns whether query extraction is enabled.
-  virtual bool IsQueryExtractionEnabled() = 0;
-
-  // Returns a string indicating whether InstantExtended is enabled, suitable
-  // for adding as a query parameter to the search requests. Returns an empty
-  // string otherwise.
-  //
-  // |for_search| should be set to true for search requests, in which case this
-  // returns a non-empty string only if query extraction is enabled.
-  virtual std::string InstantExtendedEnabledParam(bool for_search) = 0;
-
-  // Returns a string that will cause the search results page to update
-  // incrementally. Currently, Instant Extended passes a different param to
-  // search results pages that also has this effect, so by default this function
-  // returns the empty string when Instant Extended is enabled. However, when
-  // doing instant search result prerendering, we still need to pass this param,
-  // as Instant Extended does not cause incremental updates by default for the
-  // prerender page. Callers should set |for_prerender| in this case to force
-  // the returned string to be non-empty.
-  virtual std::string ForceInstantResultsParam(bool for_prerender) = 0;
-
-  // Returns the start-edge margin of the omnibox in pixels.
-  virtual int OmniboxStartMargin() = 0;
-
   // Returns the value to use for replacements of type
   // GOOGLE_IMAGE_SEARCH_SOURCE.
   virtual std::string GoogleImageSearchSource() = 0;