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

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 "base/command_line.h"
 #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/identity_api.h"
@@ skipping 170 matching lines @@
         break;
       }
     }
   }
 
  private:
   ResultType result_;
   OAuth2MintTokenFlow::Delegate* delegate_;
 };
 
-BrowserContextKeyedService* IdentityAPITestFactory(
-    content::BrowserContext* profile) {
-  return new IdentityAPI(static_cast<Profile*>(profile));
-}
-
 // Waits for a specific GURL to generate a NOTIFICATION_LOAD_STOP event and
 // saves a pointer to the window embedding the WebContents, which can be later
 // closed.
 class WaitForGURLAndCloseWindow : public content::WindowedNotificationObserver {
  public:
   explicit WaitForGURLAndCloseWindow(GURL url)
       : WindowedNotificationObserver(
             content::NOTIFICATION_LOAD_STOP,
             content::NotificationService::AllSources()),
         url_(url) {}
@@ skipping 1027 matching lines @@
   scoped_ptr<base::Value> value(
       utils::RunFunctionAndReturnSingleResult(function.get(), args, browser()));
 
   std::string url;
   EXPECT_TRUE(value->GetAsString(&url));
   EXPECT_EQ(std::string("https://abcdefghij.chromiumapp.org/callback#test"),
             url);
 }
 
 }  // namespace extensions