Merge pull request #2092 from Sonicadvance1/gles_occlusion_queries

Implement full occlusion queries for the Nexus 9.

Source/Core/VideoBackends/OGL/main.cpp

@@ -196,7 +196,7 @@ void VideoBackend::Video_Prepare()
 
 	BPInit();
 	g_vertex_manager = new VertexManager;
-	g_perf_query = new PerfQuery;
+	g_perf_query = GetPerfQuery();
 	Fifo_Init(); // must be done before OpcodeDecoder_Init()
 	OpcodeDecoder_Init();
 	IndexGenerator::Init();