content::ResourceType clean up

extensions/browser/api/declarative_webrequest/webrequest_condition_unittest.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 "extensions/browser/api/declarative_webrequest/webrequest_condition.h"
 
 #include <memory>
 #include <set>
 
 #include "base/message_loop/message_loop.h"
 #include "base/test/values_test_util.h"
 #include "base/values.h"
 #include "components/url_matcher/url_matcher_constants.h"
 #include "content/public/browser/resource_request_info.h"
 #include "extensions/browser/api/declarative_webrequest/webrequest_constants.h"
 #include "net/base/request_priority.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-using content::ResourceType;
 using url_matcher::URLMatcher;
 using url_matcher::URLMatcherConditionSet;
 
 namespace extensions {
 
 TEST(WebRequestConditionTest, CreateCondition) {
   // Necessary for TestURLRequest.
   base::MessageLoopForIO message_loop;
   URLMatcher matcher;
 
@@ skipping 365 matching lines @@
            // filters.
            "  \"requestHeaders\": [{}], \n"
            "  \"responseHeaders\": [{}], \n"
            "}"),
       &error);
   EXPECT_FALSE(error.empty());
   EXPECT_FALSE(result.get());
 }
 
 }  // namespace extensions