Delete from Sync the artificial search engines created by the omnibox extensions.

chrome/browser/search_engines/template_url_service_sync_unittest.cc

Index: chrome/browser/search_engines/template_url_service_sync_unittest.cc
diff --git a/chrome/browser/search_engines/template_url_service_sync_unittest.cc b/chrome/browser/search_engines/template_url_service_sync_unittest.cc
index c2a39319a2663855fd17c8610a625e63ea4e3fd3..5198c2959bfd0c7f4e4609747b1ae631169e6986 100644
--- a/chrome/browser/search_engines/template_url_service_sync_unittest.cc
+++ b/chrome/browser/search_engines/template_url_service_sync_unittest.cc
@@ -164,22 +164,9 @@ class TestTemplateURLServiceClient : public TemplateURLServiceClient {
        TemplateURLID id,
        const base::string16& term) override {}
    void AddKeywordGeneratedVisit(const GURL& url) override {}
-
-   void RestoreExtensionInfoIfNecessary(TemplateURL* template_url) override;
+   bool IsOmniboxExtensionURL(const std::string& url) override { return false; }
 };
 
-void TestTemplateURLServiceClient::RestoreExtensionInfoIfNecessary(
-    TemplateURL* template_url) {
-  const TemplateURLData& data = template_url->data();
-  GURL url(data.url());
-  if (url.SchemeIs(kOmniboxScheme)) {
-    const std::string& extension_id = url.host();
-    template_url->set_extension_info(
-        base::MakeUnique<TemplateURL::AssociatedExtensionInfo>(extension_id));
-    template_url->set_type(TemplateURL::OMNIBOX_API_EXTENSION);
-  }
-}
-
 }  // namespace