tree 29873e19ebec1a8fdca785badd1f26f8692dc231
parent 2f1e39e3622aab62f85103291d0bf2cac1366ed8
author Becky Siegel <beckysiegel@google.com> 1521835550 -0700
committer Paladox <thomasmulhall410@yahoo.com> 1522363570 +0100

Make sure plugins are not double counted

In the event that a plugin with the same name was attempted to be
installed more than once, the plugin count would double count, and
result in a negative total plugin count.

This prevents actions from taking place, such as opening a popup plugin,
because it verifies that the plugin count is 0 first.

Change-Id: I5805caaa4448117d6ee86f2e2ce5681ab6b6c324
(cherry picked from commit f1d423290e1303138a82ea6ad4d8c054810dacf7)