Merge "GPU Debug Layers: Allow multiple layer apps" into qt-dev

                    if (gpuDebugLayerApp != null && !gpuDebugLayerApp.isEmpty()) {

                        Log.i(TAG, "GPU debug layer app: " + gpuDebugLayerApp);

                        final String paths = getDebugLayerAppPaths(pm, gpuDebugLayerApp);

                        // If a colon is present, treat this as multiple apps, so Vulkan and GLES

                        // layer apps can be provided at the same time.

                        String[] layerApps = gpuDebugLayerApp.split(":");

                        for (int i = 0; i < layerApps.length; i++) {

                            String paths = getDebugLayerAppPaths(pm, layerApps[i]);

                            if (paths != null) {

                                // Append the path so files placed in the app's base directory will

                                // override the external path

                                layerPaths += paths + ":";

                            }

                        }

                    }

                    final String layers = coreSettings.getString(Settings.Global.GPU_DEBUG_LAYERS);