Implement remaining chrome.searchEnginesPrivate methods.

chrome/browser/extensions/api/search_engines_private/search_engines_private_apitest.cc

Index: chrome/browser/extensions/api/search_engines_private/search_engines_private_apitest.cc
diff --git a/chrome/browser/extensions/api/search_engines_private/search_engines_private_apitest.cc b/chrome/browser/extensions/api/search_engines_private/search_engines_private_apitest.cc
index 6f6feda399007851f058220b162ac902423723cf..db38121a7b46a5be87ab35d5846895cb0fe8e911 100644
--- a/chrome/browser/extensions/api/search_engines_private/search_engines_private_apitest.cc
+++ b/chrome/browser/extensions/api/search_engines_private/search_engines_private_apitest.cc
@@ -51,4 +51,22 @@ IN_PROC_BROWSER_TEST_F(SearchEnginesPrivateApiTest,
       << message_;
 }
 
+IN_PROC_BROWSER_TEST_F(SearchEnginesPrivateApiTest, AddNewSearchEngine) {
+  EXPECT_TRUE(RunSearchEnginesSubtest("addNewSearchEngine")) << message_;
+}
+
+IN_PROC_BROWSER_TEST_F(SearchEnginesPrivateApiTest, UpdateSearchEngine) {
+  EXPECT_TRUE(RunSearchEnginesSubtest("updateSearchEngine")) << message_;
+}
+
+IN_PROC_BROWSER_TEST_F(SearchEnginesPrivateApiTest, RemoveSearchEngine) {
+  EXPECT_TRUE(RunSearchEnginesSubtest("removeSearchEngine")) << message_;
+}
+
+IN_PROC_BROWSER_TEST_F(SearchEnginesPrivateApiTest,
+                       OnOtherSearchEnginesChanged) {
+  EXPECT_TRUE(RunSearchEnginesSubtest("onOtherSearchEnginesChanged"))
+      << message_;
+}
+
 }  // namespace extensions