mac: Prepare most test code for -Wunused-functions too.

chrome/browser/extensions/api/identity/experimental_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 "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/api/identity/experimental_identity_api.h"
 #include "chrome/browser/extensions/api/identity/identity_api.h"
@@ skipping 159 matching lines @@
         break;
       }
     }
   }
 
  private:
   ResultType result_;
   OAuth2MintTokenFlow::Delegate* delegate_;
 };
 
-BrowserContextKeyedService* IdentityAPITestFactory(Profile* profile) {
-  return new IdentityAPI(profile);
-}
-
 }  // namespace
 
 class ExperimentalMockGetAuthTokenFunction :
     public ExperimentalIdentityGetAuthTokenFunction {
  public:
   ExperimentalMockGetAuthTokenFunction()
       : login_access_token_result_(true),
         login_ui_result_(true),
         install_ui_result_(false),
         login_ui_shown_(false),
@@ skipping 580 matching lines @@
       "https://abcdefghij.chromiumapp.org/callback#test')</script>\"}]",
       browser()));
 
   std::string url;
   EXPECT_TRUE(value->GetAsString(&url));
   EXPECT_EQ(std::string("https://abcdefghij.chromiumapp.org/callback#test"),
             url);
 }
 
 }  // namespace extensions