Add Finch testing configs for ReportCertificateErrors study

chrome/browser/ssl/certificate_reporting_test_utils.h

 // 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.
 
 #ifndef CHROME_BROWSER_SSL_CERTIFICATE_REPORTING_TEST_UTILS_H_
 #define CHROME_BROWSER_SSL_CERTIFICATE_REPORTING_TEST_UTILS_H_
 
 #include <string>
 
 #include "chrome/browser/net/certificate_error_reporter.h"
@@ skipping 20 matching lines @@
 // A test class that tracks the latest hostname for which a certificate
 // report would have been sent over the network.
 class CertificateReportingTest : public InProcessBrowserTest {
  public:
   // Set up the mock reporter that keeps track of certificate reports
   // that the safe browsing service sends.
   void SetUpMockReporter();
 
  protected:
   // Get the latest hostname for which a certificate report was sent.
-  const std::string& GetLatestHostnameReported();
+  const std::string& GetLatestHostnameReported() const;
 
  private:
   MockReporter* reporter_;
 };
 
 // Sets the browser preference to enable or disable extended reporting.
 void SetCertReportingOptIn(Browser* browser, OptIn opt_in);
 
 // Sets up a mock SSLCertReporter and return a pointer to it, which will
 // be owned by the caller. The mock SSLCertReporter will call
 // |run_loop|'s QuitClosure when a report is sent. It also checks that a
 // report is sent or not sent according to |expect_report|.
 scoped_ptr<SSLCertReporter> SetUpMockSSLCertReporter(
     base::RunLoop* run_loop,
     ExpectReport expect_report);
 
-// Forces a Finch config for the cert reporting experiment.
-void SetCertReportingFinchConfig(const std::string& group_name,
-                                 const std::string& param_value);
-void SetCertReportingFinchConfig(const std::string& group_name);
+// Returns whether a report should be expected (due to the Finch config)
+// if the user opts in.
+ExpectReport GetReportExpectedFromFinch();
 
 }  // namespace CertificateReportingTestUtils
 
 #endif  // CHROME_BROWSER_SSL_CERTIFICATE_REPORTING_TEST_UTILS_H_