Change mojo enums to be scoped enums in the generated C++ bindings.

content/shell/browser/shell_permission_manager.cc

Index: content/shell/browser/shell_permission_manager.cc
diff --git a/content/shell/browser/shell_permission_manager.cc b/content/shell/browser/shell_permission_manager.cc
index fb537b027b828c08dbaed6c7a00d346d58914de9..5d666467bba1392d2a7972b044887a84d09e8201 100644
--- a/content/shell/browser/shell_permission_manager.cc
+++ b/content/shell/browser/shell_permission_manager.cc
@@ -26,7 +26,8 @@ int ShellPermissionManager::RequestPermission(
     bool user_gesture,
     const base::Callback<void(PermissionStatus)>& callback) {
   callback.Run(permission == PermissionType::GEOLOCATION
-                   ? PERMISSION_STATUS_GRANTED : PERMISSION_STATUS_DENIED);
+                   ? PermissionStatus::GRANTED
+                   : PermissionStatus::DENIED);
   return kNoPendingOperation;
 }
 
@@ -40,7 +41,8 @@ int ShellPermissionManager::RequestPermissions(
   std::vector<PermissionStatus> result(permissions.size());
   for (const auto& permission : permissions) {
     result.push_back(permission == PermissionType::GEOLOCATION
-        ? PERMISSION_STATUS_GRANTED : PERMISSION_STATUS_DENIED);
+                         ? PermissionStatus::GRANTED
+                         : PermissionStatus::DENIED);
   }
   callback.Run(result);
   return kNoPendingOperation;
@@ -64,9 +66,9 @@ PermissionStatus ShellPermissionManager::GetPermissionStatus(
        permission == PermissionType::VIDEO_CAPTURE) &&
       command_line->HasSwitch(switches::kUseFakeDeviceForMediaStream) &&
       command_line->HasSwitch(switches::kUseFakeUIForMediaStream)) {
-    return PERMISSION_STATUS_GRANTED;
+    return PermissionStatus::GRANTED;
   }
-  return PERMISSION_STATUS_DENIED;
+  return PermissionStatus::DENIED;
 }
 
 void ShellPermissionManager::RegisterPermissionUsage(