Change device IDs from unsigned to signed.

ui/ozone/platform/egltest/ozone_platform_egltest.cc

Index: ui/ozone/platform/egltest/ozone_platform_egltest.cc
diff --git a/ui/ozone/platform/egltest/ozone_platform_egltest.cc b/ui/ozone/platform/egltest/ozone_platform_egltest.cc
index 1e8ca15e88cb0c20c4546c4f887d6172d25e198a..42ce0a8d6e768c1935c61e89c997000e6c6f9db1 100644
--- a/ui/ozone/platform/egltest/ozone_platform_egltest.cc
+++ b/ui/ozone/platform/egltest/ozone_platform_egltest.cc
@@ -56,7 +56,7 @@ std::string GetShimLibraryName() {
 void ScaleTouchEvent(TouchEvent* event, const gfx::SizeF& size) {
   for (const auto& device :
        DeviceDataManager::GetInstance()->touchscreen_devices()) {
-    if (device.id == static_cast<unsigned int>(event->source_device_id())) {
+    if (device.id == event->source_device_id()) {
       gfx::SizeF touchscreen_size = device.size;
       gfx::PointF location = event->location_f();