Add Rappor reporting for grant/deny/cancel/ignore of Mediastream permissions

chrome/browser/permissions/permission_context_uma_util.cc

Index: chrome/browser/permissions/permission_context_uma_util.cc
diff --git a/chrome/browser/permissions/permission_context_uma_util.cc b/chrome/browser/permissions/permission_context_uma_util.cc
index 8a917559ffd9df6604b072a22a3ab4b61a434c2b..17cf35acd8ee87d188cd9c236a93291a9fd899b5 100644
--- a/chrome/browser/permissions/permission_context_uma_util.cc
+++ b/chrome/browser/permissions/permission_context_uma_util.cc
@@ -32,22 +32,6 @@ using content::PermissionType;
 
 namespace {
 
-// Enum for UMA purposes, make sure you update histograms.xml if you add new
-// permission actions. Never delete or reorder an entry; only add new entries
-// immediately before PERMISSION_NUM
-enum PermissionAction {
-  GRANTED = 0,
-  DENIED = 1,
-  DISMISSED = 2,
-  IGNORED = 3,
-  REVOKED = 4,
-  REENABLED = 5,
-  REQUESTED = 6,
-
-  // Always keep this at the end.
-  PERMISSION_ACTION_NUM,
-};
-
 // The returned strings must match the RAPPOR metrics in rappor.xml,
 // e.g. Permissions.Action.Geolocation etc..
 const std::string GetPermissionString(ContentSettingsType permission) {