media: Add RAPPOR for ProtectedMediaIdentifier permission

chrome/browser/permissions/permission_uma_util.cc

Index: chrome/browser/permissions/permission_uma_util.cc
diff --git a/chrome/browser/permissions/permission_uma_util.cc b/chrome/browser/permissions/permission_uma_util.cc
index c153206246b955b3252132f9da9d3afd2560b920..c5952fb9a3ef0919fe2604300a0d1db489d56b61 100644
--- a/chrome/browser/permissions/permission_uma_util.cc
+++ b/chrome/browser/permissions/permission_uma_util.cc
@@ -129,6 +129,11 @@ void RecordPermissionRequest(PermissionType permission,
           "ContentSettings.PermissionRequested.Midi.Url2",
           rappor::LOW_FREQUENCY_ETLD_PLUS_ONE_RAPPOR_TYPE,
           rappor::GetDomainAndRegistrySampleFromGURL(requesting_origin));
+    } else if (permission == PermissionType::PROTECTED_MEDIA_IDENTIFIER) {
+      rappor_service->RecordSample(
+          "ContentSettings.PermissionRequested.ProtectedMedia.Url2",
+          rappor::LOW_FREQUENCY_ETLD_PLUS_ONE_RAPPOR_TYPE,
+          rappor::GetDomainAndRegistrySampleFromGURL(requesting_origin));
     }
   }