Avoid trying to disconnect twice with ANGLE

The Vulkan runtime makes all the native_window_* calls
when running with ANGLE.

Noticed while debugging b/184280023.

Bug: b/154237217
Test: MixedDeviceOwnerTest on Cuttlefish w/ SwANGLE
Change-Id: Ie7c5ebcedf6eb0c23fdd1223c0ef866d4a2d9944

opengl/libs/EGL/egl_object.cpp

@@ -82,9 +82,13 @@ egl_surface_t::~egl_surface_t() {
 
 void egl_surface_t::disconnect() {
     if (win != nullptr && connected) {
-        native_window_set_buffers_format(win, 0);
-        if (native_window_api_disconnect(win, NATIVE_WINDOW_API_EGL)) {
-            ALOGW("EGLNativeWindowType %p disconnect failed", win);
+        // NOTE: When using Vulkan backend, the Vulkan runtime makes all the
+        // native_window_* calls, so don't do them here.
+        if (!cnx->useAngle) {
+            native_window_set_buffers_format(win, 0);
+            if (native_window_api_disconnect(win, NATIVE_WINDOW_API_EGL)) {
+                ALOGW("EGLNativeWindowType %p disconnect failed", win);
+            }
         }
         connected = false;
     }