Record Rappor metrics even for constant permissions.

chrome/browser/permissions/permission_uma_util.cc

 // Copyright 2014 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 "chrome/browser/permissions/permission_uma_util.h"
 
 #include <utility>
 
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/stringprintf.h"
@@ skipping 175 matching lines @@
     } else if (permission == PermissionType::NOTIFICATIONS) {
       // TODO(dominickn): remove this deprecated metric - crbug.com/605836.
       rappor::SampleDomainAndRegistryFromGURL(
           rappor_service,
           "ContentSettings.PermissionRequested.Notifications.Url",
           requesting_origin);
       rappor_service->RecordSample(
           "ContentSettings.PermissionRequested.Notifications.Url2",
           rappor::LOW_FREQUENCY_ETLD_PLUS_ONE_RAPPOR_TYPE,
           rappor::GetDomainAndRegistrySampleFromGURL(requesting_origin));
+    } else if (permission == PermissionType::MIDI ||
+               permission == PermissionType::MIDI_SYSEX) {
+      rappor::SampleDomainAndRegistryFromGURL(
+          rappor_service,
+          "ContentSettings.PermissionRequested.Midi.Url",
+          requesting_origin);
     }
   }
 
   bool secure_origin = content::IsOriginSecure(requesting_origin);
   UMA_HISTOGRAM_ENUMERATION(
       "ContentSettings.PermissionRequested",
       static_cast<base::HistogramBase::Sample>(permission),
       static_cast<base::HistogramBase::Sample>(PermissionType::NUM));
   if (secure_origin) {
     UMA_HISTOGRAM_ENUMERATION(
@@ skipping 150 matching lines @@
 }
 
 void PermissionUmaUtil::PermissionPromptDenied(
     const std::vector<PermissionBubbleRequest*>& requests) {
   DCHECK(!requests.empty());
   DCHECK(requests.size() == 1);
 
   PERMISSION_BUBBLE_TYPE_UMA(kPermissionsPromptDenied,
                              requests[0]->GetPermissionBubbleType());
 }