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

chrome/browser/extensions/api/identity/identity_apitest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 120 matching lines @@
     function->SetArgs(parsed_args.get());
 
     if (!function->extension()) {
       scoped_refptr<Extension> empty_extension(
           test_util::CreateEmptyExtension());
       function->set_extension(empty_extension.get());
     }
 
     function->set_browser_context(browser()->profile());
     function->set_has_callback(true);
-    function->Run()->Execute();
+    function->RunWithValidation()->Execute();
   }
 
   std::string WaitForError(UIThreadExtensionFunction* function) {
     RunMessageLoopUntilResponse();
     EXPECT_FALSE(function->GetResultList()) << "Did not expect a result";
     return function->GetError();
   }
 
   base::Value* WaitForSingleResult(UIThreadExtensionFunction* function) {
     RunMessageLoopUntilResponse();
@@ skipping 1233 matching lines @@
   EXPECT_TRUE(value->GetAsString(&access_token));
   EXPECT_EQ(std::string(kAccessToken), access_token);
   EXPECT_TRUE(func->login_ui_shown());
   EXPECT_TRUE(func->scope_ui_shown());
   EXPECT_EQ(IdentityTokenCacheValue::CACHE_STATUS_TOKEN,
             GetCachedToken(std::string()).status());
 }
 
 IN_PROC_BROWSER_TEST_F(GetAuthTokenFunctionTest, ComponentWithChromeClientId) {
   scoped_refptr<FakeGetAuthTokenFunction> func(new FakeGetAuthTokenFunction());
+  func->ignore_did_respond_for_testing();
   scoped_refptr<const Extension> extension(
       CreateExtension(SCOPES | AS_COMPONENT));
   func->set_extension(extension.get());
   const OAuth2Info& oauth2_info = OAuth2Info::GetOAuth2Info(extension.get());
   EXPECT_TRUE(oauth2_info.client_id.empty());
   EXPECT_FALSE(func->GetOAuth2ClientId().empty());
   EXPECT_NE("client1", func->GetOAuth2ClientId());
 }
 
 IN_PROC_BROWSER_TEST_F(GetAuthTokenFunctionTest, ComponentWithNormalClientId) {
   scoped_refptr<FakeGetAuthTokenFunction> func(new FakeGetAuthTokenFunction());
+  func->ignore_did_respond_for_testing();
   scoped_refptr<const Extension> extension(
       CreateExtension(CLIENT_ID | SCOPES | AS_COMPONENT));
   func->set_extension(extension.get());
   EXPECT_EQ("client1", func->GetOAuth2ClientId());
 }
 
 IN_PROC_BROWSER_TEST_F(GetAuthTokenFunctionTest, MultiDefaultUser) {
   SignIn("primary@example.com");
   SetAccountState(CreateIds("primary@example.com", "1"), true);
   SetAccountState(CreateIds("secondary@example.com", "2"), true);
@@ skipping 480 matching lines @@
   EXPECT_EQ(std::string("https://abcdefghij.chromiumapp.org/callback#test"),
             url);
 }
 
 }  // namespace extensions
 
 // Tests the chrome.identity API implemented by custom JS bindings .
 IN_PROC_BROWSER_TEST_F(ExtensionApiTest, ChromeIdentityJsBindings) {
   ASSERT_TRUE(RunExtensionTest("identity/js_bindings")) << message_;
 }