Actually support protected content in SkiaGL RenderEngine

Bug: 180015774
Test: Emperor's new Groove on Google TV app does not green screen.
Change-Id: I303659be13e7f051568aa5dfd01f126bd97f4dee
diff --git a/libs/renderengine/skia/SkiaGLRenderEngine.cpp b/libs/renderengine/skia/SkiaGLRenderEngine.cpp
index b4a2d79..dc14fc2 100644
--- a/libs/renderengine/skia/SkiaGLRenderEngine.cpp
+++ b/libs/renderengine/skia/SkiaGLRenderEngine.cpp
@@ -337,7 +337,7 @@
     if (useProtectedContext == mInProtectedContext) {
         return true;
     }
-    if (useProtectedContext && supportsProtectedContent()) {
+    if (useProtectedContext && !supportsProtectedContent()) {
         return false;
     }
     const EGLSurface surface =