[Extensions] DCHECK that ExtensionFunctions respond (and only once)

chrome/browser/extensions/api/hotword_private/hotword_private_apitest.cc

Index: chrome/browser/extensions/api/hotword_private/hotword_private_apitest.cc
diff --git a/chrome/browser/extensions/api/hotword_private/hotword_private_apitest.cc b/chrome/browser/extensions/api/hotword_private/hotword_private_apitest.cc
index 37699dffde3acd7495517cf76a58f10baa1aacb3..c8fc3c6746ddfac5e3296b043f5084d8cd9617e3 100644
--- a/chrome/browser/extensions/api/hotword_private/hotword_private_apitest.cc
+++ b/chrome/browser/extensions/api/hotword_private/hotword_private_apitest.cc
@@ -474,8 +474,9 @@ IN_PROC_BROWSER_TEST_F(HotwordPrivateApiTest, AudioHistory) {
   service()->SetAudioHistoryHandler(handler);
   web_history->SetExpectedValue(true);
 
-  ExtensionTestMessageListener setListenerT("set AH: true success", false);
-  ExtensionTestMessageListener setListenerF("set AH: false success", false);
+  ExtensionTestMessageListener setListenerT("set AH True: true success", false);
+  ExtensionTestMessageListener setListenerF("set AH False: false success",
+                                            false);
   ExtensionTestMessageListener getListener("get AH: true success", false);
 
   ASSERT_TRUE(RunComponentExtensionTest("audioHistory")) << message_;
@@ -486,8 +487,10 @@ IN_PROC_BROWSER_TEST_F(HotwordPrivateApiTest, AudioHistory) {
 
   web_history->SetExpectedValue(false);
 
-  ExtensionTestMessageListener setListenerT2("set AH: true success", false);
-  ExtensionTestMessageListener setListenerF2("set AH: false success", false);
+  ExtensionTestMessageListener setListenerT2("set AH True: true success",
+                                             false);
+  ExtensionTestMessageListener setListenerF2("set AH False: false success",
+                                             false);
   ExtensionTestMessageListener getListener2("get AH: false success", false);
 
   ASSERT_TRUE(RunComponentExtensionTest("audioHistory")) << message_;
@@ -506,8 +509,9 @@ IN_PROC_BROWSER_TEST_F(HotwordPrivateApiTest, AudioHistoryNoWebHistory) {
   PrefService* prefs = profile()->GetPrefs();
   prefs->SetBoolean(prefs::kHotwordAudioLoggingEnabled, true);
 
-  ExtensionTestMessageListener setListenerT("set AH: true failure", false);
-  ExtensionTestMessageListener setListenerF("set AH: true failure", false);
+  ExtensionTestMessageListener setListenerT("set AH True: true failure", false);
+  ExtensionTestMessageListener setListenerF("set AH False: true failure",
+                                            false);
   ExtensionTestMessageListener getListener("get AH: true failure", false);
 
   ASSERT_TRUE(RunComponentExtensionTest("audioHistory")) << message_;
@@ -523,12 +527,13 @@ IN_PROC_BROWSER_TEST_F(HotwordPrivateApiTest, AudioHistoryWebHistoryFailure) {
       new MockAudioHistoryHandler(profile(), web_history);
   service()->SetAudioHistoryHandler(handler);
   web_history->SetFailureState();
-  // It shouldn't matter if this is set to true. GetAduioHistoryEnabled should
+  // It shouldn't matter if this is set to true. GetAudioHistoryEnabled should
   // still return false.
   web_history->SetExpectedValue(true);
 
-  ExtensionTestMessageListener setListenerT("set AH: false failure", false);
-  ExtensionTestMessageListener setListenerF("set AH: false failure", false);
+  ExtensionTestMessageListener setListenerT("set AH True: true failure", false);
+  ExtensionTestMessageListener setListenerF("set AH False: false failure",
+                                            false);
   ExtensionTestMessageListener getListener("get AH: false failure", false);
 
   ASSERT_TRUE(RunComponentExtensionTest("audioHistory")) << message_;