Introduce IsMemberOfExtension function into ExtensionIMEUtil.

chromeos/ime/extension_ime_util_unittest.cc

Index: chromeos/ime/extension_ime_util_unittest.cc
diff --git a/chromeos/ime/extension_ime_util_unittest.cc b/chromeos/ime/extension_ime_util_unittest.cc
index a25c1a131c57aef06d525cfb1396635632be2595..468a725cbc018478b6d9abaf2535639f7699e094 100644
--- a/chromeos/ime/extension_ime_util_unittest.cc
+++ b/chromeos/ime/extension_ime_util_unittest.cc
@@ -22,4 +22,25 @@ TEST(ExtensionIMEUtilTest, IsExtensionIMETest) {
   EXPECT_FALSE(extension_ime_util::IsExtensionIME("mozc"));
 }
 
+TEST(ExtensionIMEUtilTest, IsMemberOfExtension) {
+  const char* extention1 = "abcdefg";
+  const char* extention2 = "hijklmn";
+  const char* engine_id1 = "12345";
+  const char* engine_id2 = "67890";
+
+  const std::string extention_1_engine_1 =
+      extension_ime_util::GetInputMethodID(extention1, engine_id1);
+  const std::string extention_1_engine_2 =
+      extension_ime_util::GetInputMethodID(extention1, engine_id2);
+
+  EXPECT_TRUE(extension_ime_util::IsMemberOfExtension(extention_1_engine_1,
+                                                      extention1));
+  EXPECT_TRUE(extension_ime_util::IsMemberOfExtension(extention_1_engine_2,
+                                                      extention1));
+  EXPECT_FALSE(extension_ime_util::IsMemberOfExtension(extention_1_engine_1,
+                                                       extention2));
+  EXPECT_FALSE(extension_ime_util::IsMemberOfExtension(extention_1_engine_2,
+                                                       extention2));
+}
+
 }  // namespace chromeos