Cache SearchEngineType of TemplateURL

components/search_engines/template_url.h

Index: components/search_engines/template_url.h
diff --git a/components/search_engines/template_url.h b/components/search_engines/template_url.h
index 2acb146851887d0f8246dbf56c4b60071374d097..16c79ea9f9d349463e9a4d3a884f6ef0d3a79c20 100644
--- a/components/search_engines/template_url.h
+++ b/components/search_engines/template_url.h
@@ -17,6 +17,7 @@
 #include "base/time/time.h"
 #include "components/metrics/proto/omnibox_event.pb.h"
 #include "components/metrics/proto/omnibox_input_type.pb.h"
+#include "components/search_engines/search_engine_type.h"
 #include "components/search_engines/template_url_data.h"
 #include "components/search_engines/template_url_id.h"
 #include "ui/gfx/geometry/size.h"
@@ -644,6 +645,11 @@ class TemplateURL {
   // OMNIBOX_API_EXTENSION.
   std::string GetExtensionId() const;
 
+  // Returns the type of this search engine, or SEARCH_ENGINE_OTHER if no
+  // engines match.
+  SearchEngineType GetEngineType(
+      const SearchTermsData& search_terms_data) const;
+
   // Use the alternate URLs and the search URL to match the provided |url|
   // and extract |search_terms| from it. Returns false and an empty
   // |search_terms| if no search terms can be matched. The order in which the
@@ -749,6 +755,9 @@ class TemplateURL {
   TemplateURLRef contextual_search_url_ref_;
   std::unique_ptr<AssociatedExtensionInfo> extension_info_;
 
+  // Caches the computed engine type across successive calls to GetEngineType().
+  mutable SearchEngineType engine_type_;
+
   // TODO(sky): Add date last parsed OSD file.
 
   DISALLOW_COPY_AND_ASSIGN(TemplateURL);