[Extensions] Remove ChromeSyncExtensionFunction

chrome/browser/extensions/chrome_extension_function.cc

 // Copyright 2013 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/chrome_extension_function.h"
 
 #include <utility>
 
 #include "chrome/browser/extensions/chrome_extension_function_details.h"
 #include "chrome/browser/extensions/window_controller.h"
@@ skipping 77 matching lines @@
   if (results_)
     return RespondNow(ErrorWithArguments(std::move(results_), error_));
   return RespondNow(Error(error_));
 }
 
 // static
 bool ChromeAsyncExtensionFunction::ValidationFailure(
     ChromeAsyncExtensionFunction* function) {
   return false;
 }
-
-ChromeSyncExtensionFunction::ChromeSyncExtensionFunction() {
-}
-
-ChromeSyncExtensionFunction::~ChromeSyncExtensionFunction() {}
-
-ExtensionFunction::ResponseAction ChromeSyncExtensionFunction::Run() {
-  if (!RunSync()) {
-    DCHECK(!results_);
-    return RespondNow(Error(error_));
-  }
-  return RespondNow(ArgumentList(std::move(results_)));
-}
-
-// static
-bool ChromeSyncExtensionFunction::ValidationFailure(
-    ChromeSyncExtensionFunction* function) {
-  return false;
-}