Delete some unused code found by -Wunused-function

chrome/browser/extensions/api/webstore_private/webstore_private_api.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 "chrome/browser/extensions/api/webstore_private/webstore_private_api.h"
 
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_vector.h"
@@ skipping 85 matching lines @@
     "You cannot specify both icon data and an icon url";
 const char kInvalidIconUrlError[] = "Invalid icon url";
 const char kInvalidIdError[] = "Invalid id";
 const char kInvalidManifestError[] = "Invalid manifest";
 const char kNoPreviousBeginInstallWithManifestError[] =
     "* does not match a previous call to beginInstallWithManifest3";
 const char kUserCancelledError[] = "User cancelled install";
 
 ProfileSyncService* test_sync_service = NULL;
 
-// Returns either the test sync service, or the real one from |profile|.
-ProfileSyncService* GetSyncService(Profile* profile) {
-  // TODO(webstore): It seems |test_sync_service| is not used anywhere. It
-  // should be removed.
-  if (test_sync_service)
-    return test_sync_service;
-  else
-    return ProfileSyncServiceFactory::GetInstance()->GetForProfile(profile);
-}
-
 // Helper to create a dictionary with login and token properties set from
 // the appropriate values in the passed-in |profile|.
 DictionaryValue* CreateLoginResult(Profile* profile) {
   DictionaryValue* dictionary = new DictionaryValue();
   std::string username = profile->GetPrefs()->GetString(
       prefs::kGoogleServicesUsername);
   dictionary->SetString(kLoginKey, username);
   if (!username.empty()) {
     CommandLine* cmdline = CommandLine::ForCurrentProcess();
     TokenService* token_service = TokenServiceFactory::GetForProfile(profile);
@@ skipping 393 matching lines @@
   feature_checker_->CheckGPUFeatureAvailability();
   return true;
 }
 
 void GetWebGLStatusFunction::OnFeatureCheck(bool feature_allowed) {
   CreateResult(feature_allowed);
   SendResponse(true);
 }
 
 }  // namespace extensions