Rename PlatformScreen implementations.

services/ui/display/BUILD.gn

Index: services/ui/display/BUILD.gn
diff --git a/services/ui/display/BUILD.gn b/services/ui/display/BUILD.gn
index da6a727635ef8d32764e40a505e9834da1fe61c1..5b87139319e2db8b4110f18d3fc05dc173be3c5f 100644
--- a/services/ui/display/BUILD.gn
+++ b/services/ui/display/BUILD.gn
@@ -19,18 +19,18 @@ source_set("display") {
 
   if (use_ozone && is_chromeos) {
     sources += [
-      "platform_screen_impl_ozone.cc",
-      "platform_screen_impl_ozone.h",
+      "platform_screen_ozone.cc",
+      "platform_screen_ozone.h",
     ]
 
     deps += [
       "//skia",
-      "//ui/ozone:ozone",
+      "//ui/ozone",
     ]
   } else {
     sources += [
-      "platform_screen_impl.cc",
-      "platform_screen_impl.h",
+      "platform_screen_stub.cc",
+      "platform_screen_stub.h",
     ]
   }
 }