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

components/search/search_switches.cc

Index: components/search/search_switches.cc
diff --git a/components/search/search_switches.cc b/components/search/search_switches.cc
index 93597252c3181051d7e4891ac74e6af92c00d3af..d3b80da42959956f6e0554985bf12fe1f0a2d012 100644
--- a/components/search/search_switches.cc
+++ b/components/search/search_switches.cc
@@ -11,6 +11,17 @@ namespace switches {
 // Enables EmbeddedSearch API in the search results page.
 const char kEnableEmbeddedSearchAPI[] = "enable-embeddedsearch-api";
 
+// Triggers prerendering of search base page to prefetch results for the typed
+// omnibox query. Only has an effect when prerender is enabled.
+const char kPrefetchSearchResults[] = "prefetch-search-results";
+
+#endif
+
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+
+// Enables query in the omnibox.
+const char kEnableQueryExtraction[] = "enable-query-extraction";
+
 #endif
 
 }  // namespace switches