Add browsertest for permission action reporting
MockReportSender class is refactored from chrome/browser/safe_browsing/permission_reporter_unittest.cc
into chrome/browser/safe_browsing/mock_permission_report_sender.cc and renamed to MockPermissionReportSender so that it can be used in chrome/browser/safe_browsing/permission_reporter_browsertest.cc
BUG=
613883
Committed:
https://crrev.com/d95c8fb090d3c2c2e13649740d567c260109cba8
Cr-Commit-Position: refs/heads/master@{#408346}