Add a feature which, when enabled, blocks permissions after X prompt dismissals.

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 ee69985714e9488e9ed9e9af6eb372a8e6dec8ae..8ae9ef0b4b96cf3f021b43423e6b519216f38227 100644
--- a/chrome/browser/permissions/permission_uma_util.cc
+++ b/chrome/browser/permissions/permission_uma_util.cc
@@ -356,6 +356,47 @@ void PermissionUmaUtil::PermissionPromptDenied(
       requests[0]->GetGestureType(), requests[0]->GetPermissionRequestType());
 }
 
+void PermissionUmaUtil::PermissionPromptDismissCount(
+    content::PermissionType permission,
+    int count) {
+  switch (permission) {
+    case PermissionType::GEOLOCATION:
+      UMA_HISTOGRAM_COUNTS_100("Permissions.DismissCount.Geolocation", count);
+      break;
+    case PermissionType::NOTIFICATIONS:
+      UMA_HISTOGRAM_COUNTS_100("Permissions.DismissCount.Notifications", count);
+      break;
+    case PermissionType::MIDI_SYSEX:
+      UMA_HISTOGRAM_COUNTS_100("Permissions.DismissCount.MidiSysEx", count);
+      break;
+    case PermissionType::PUSH_MESSAGING:
+      UMA_HISTOGRAM_COUNTS_100("Permissions.DismissCount.PushMessaging", count);
+      break;
+    case PermissionType::PROTECTED_MEDIA_IDENTIFIER:
+      UMA_HISTOGRAM_COUNTS_100("Permissions.DismissCount.ProtectedMedia",
+                               count);
+      break;
+    case PermissionType::DURABLE_STORAGE:
+      UMA_HISTOGRAM_COUNTS_100("Permissions.DismissCount.DurableStorage",
+                               count);
+      break;
+    case PermissionType::AUDIO_CAPTURE:
+      UMA_HISTOGRAM_COUNTS_100("Permissions.DismissCount.AudioCapture", count);
+      break;
+    case PermissionType::VIDEO_CAPTURE:
+      UMA_HISTOGRAM_COUNTS_100("Permissions.DismissCount.VideoCapture", count);
+      break;
+    // The user is not prompted for these permissions, thus there is no
+    // permission action recorded for them.

[raymes, 2016/08/05 03:27:48]

nit: this comment is inaccurate (no dismiss recorded for them)

[dominickn, 2016/08/05 04:29:30]

Done.

+    case PermissionType::MIDI:
+    case PermissionType::BACKGROUND_SYNC:
+    case PermissionType::NUM:
+      NOTREACHED() << "PERMISSION "
+                   << PermissionUtil::GetPermissionString(permission)
+                   << " not accounted for";
+  }
+}
+
 bool PermissionUmaUtil::IsOptedIntoPermissionActionReporting(Profile* profile) {
   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnablePermissionActionReporting))