Add a fuzzer test for the Clear-Site-Data header.

content/browser/browsing_data/clear_site_data_throttle_unittest.cc

 // Copyright 2016 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 "content/browser/browsing_data/clear_site_data_throttle.h"
 
 #include <memory>
 
 #include "base/command_line.h"
 #include "content/public/common/content_switches.h"
@@ skipping 70 matching lines @@
     EXPECT_TRUE(GetThrottle()->ParseHeader(test_case.header, &actual_cookies,
                                            &actual_storage, &actual_cache,
                                            &messages));
 
     EXPECT_EQ(test_case.cookies, actual_cookies);
     EXPECT_EQ(test_case.storage, actual_storage);
     EXPECT_EQ(test_case.cache, actual_cache);
   }
 }
 
-// TODO(msramek): Also test invalid inputs using libFuzzer.
 TEST_F(ClearSiteDataThrottleTest, InvalidHeader) {
   struct TestCase {
     const char* header;
     const char* console_message;
   } test_cases[] = {
       {"", "Not a valid JSON.\n"},
       {"\"unclosed quote", "Not a valid JSON.\n"},
       {"\"some text\"", "Expecting a JSON dictionary with a 'types' field.\n"},
       {"{ \"field\" : {} }",
        "Expecting a JSON dictionary with a 'types' field.\n"},
@@ skipping 23 matching lines @@
     for (const auto& message : messages) {
       EXPECT_EQ(CONSOLE_MESSAGE_LEVEL_ERROR, message.level);
       multiline_message += message.text + "\n";
     }
 
     EXPECT_EQ(test_case.console_message, multiline_message);
   }
 }
 
 }  // namespace content