--- a/dom/media/gmp-plugin/fake.info
+++ b/dom/media/gmp-plugin/fake.info
@@ -1,5 +1,5 @@
 Name: fake
 Description: Fake GMP Plugin
 Version: 1.0
-APIs: encode-video[h264], decode-video[h264], eme-decrypt-v7[fake]
+APIs: encode-video[h264:fake], decode-video[h264:fake], eme-decrypt-v7[fake]
 Libraries: dxva2.dll

--- a/dom/media/gtest/TestGMPRemoveAndDelete.cpp
+++ b/dom/media/gtest/TestGMPRemoveAndDelete.cpp
@@ -270,16 +270,17 @@ GMPRemoveTest::CreateVideoDecoder(nsCStr
 
 void
 GMPRemoveTest::gmp_GetVideoDecoder(nsCString aNodeId,
                                    GMPVideoDecoderProxy** aOutDecoder,
                                    GMPVideoHost** aOutHost)
 {
   nsTArray<nsCString> tags;
   tags.AppendElement(NS_LITERAL_CSTRING("h264"));
+  tags.AppendElement(NS_LITERAL_CSTRING("fake"));
 
   class Callback : public GetGMPVideoDecoderCallback
   {
   public:
     Callback(GMPTestMonitor* aMonitor, GMPVideoDecoderProxy** aDecoder, GMPVideoHost** aHost)
       : mMonitor(aMonitor), mDecoder(aDecoder), mHost(aHost) { }
     virtual void Done(GMPVideoDecoderProxy* aDecoder, GMPVideoHost* aHost) override {
       *mDecoder = aDecoder;