Remove //content dependency for tests in certificate_reporting

components/certificate_reporting/error_reporter_unittest.cc

 // Copyright 2015 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 "components/certificate_reporting/error_reporter.h"
 
 #include <stdint.h>
 #include <string.h>
 
 #include <set>
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
+#include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/test/histogram_tester.h"
 #include "components/certificate_reporting/encrypted_cert_logger.pb.h"
-#include "content/public/test/test_browser_thread_bundle.h"
 #include "crypto/curve25519.h"
 #include "net/test/url_request/url_request_failed_job.h"
 #include "net/url_request/report_sender.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace certificate_reporting {
 
 namespace {
 
@@ skipping 44 matching lines @@
   }
 
  private:
   base::Closure url_request_destroyed_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(TestCertificateReporterNetworkDelegate);
 };
 
 class ErrorReporterTest : public ::testing::Test {
  public:
-  ErrorReporterTest()
-      : thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP) {
+  ErrorReporterTest() {
     memset(server_private_key_, 1, sizeof(server_private_key_));
     crypto::curve25519::ScalarBaseMult(server_private_key_, server_public_key_);
   }
 
   ~ErrorReporterTest() override {}
 
  protected:
-  content::TestBrowserThreadBundle thread_bundle_;
+  base::MessageLoopForIO loop_;
   uint8_t server_public_key_[32];
   uint8_t server_private_key_[32];
 
   DISALLOW_COPY_AND_ASSIGN(ErrorReporterTest);
 };
 
 // Test that ErrorReporter::SendExtendedReportingReport sends
 // an encrypted or plaintext extended reporting report as appropriate.
 TEST_F(ErrorReporterTest, ExtendedReportingSendReport) {
   // Data should not be encrypted when sent to an HTTPS URL.
@@ skipping 214 matching lines @@
   ASSERT_TRUE(encrypted_request.ParseFromString(
       std::string(reinterpret_cast<const char*>(kSerializedEncryptedReport),
                   sizeof(kSerializedEncryptedReport))));
   ASSERT_TRUE(ErrorReporter::DecryptErrorReport(
       server_private_key_, encrypted_request, &decrypted_serialized_report));
 }
 
 }  // namespace
 
 }  // namespace certificate_reporting