[GStreamer] Include MpegAudioParse plugin in Brcm Nexus gstreamer pipeline

https://bugs.webkit.org/show_bug.cgi?id=268559

Reviewed by Xabier Rodriguez-Calvar.

On broadcom/nexus with progressive audio, gst_element_query_duration()
returns wrong values, which is avoided by forcing mpegaudioparse.

See: #1213

Original author: suresh-khurdiya-epam <skhurdiya.contractor@libertyglobal.com>

* Source/WebCore/platform/graphics/gstreamer/GStreamerCommon.cpp:
(WebCore::ensureGStreamerInitialized): Override mpegaudioparse rank

Author: suresh-khurdiya-epam

Source/WebCore/platform/graphics/gstreamer/GStreamerCommon.cpp

@@ -307,6 +307,19 @@ bool ensureGStreamerInitialized()
             gst_mpegts_initialize();
 #endif
 
+#if PLATFORM(BCM_NEXUS)
+        {
+            auto registry = gst_registry_get();
+            GRefPtr<GstPluginFeature> brcmaudfilter = adoptGRef(gst_registry_lookup_feature(registry, "brcmaudfilter"));
+            GRefPtr<GstPluginFeature> mpegaudioparse = adoptGRef(gst_registry_lookup_feature(registry, "mpegaudioparse"));
+
+            if (brcmaudfilter && mpegaudioparse) {
+                GST_INFO("overriding mpegaudioparse rank with brcmaudfilter rank + 1");
+                gst_plugin_feature_set_rank(mpegaudioparse.get(), gst_plugin_feature_get_rank(brcmaudfilter.get()) + 1);
+            }
+        }
+#endif
+
         registerAppsinkWithWorkaroundsIfNeeded();
 #endif
     });