Android JNI gen: Don't emit code for empty RegisterNatives()

chromecast/android/cast_jni_registrar.cc

Index: chromecast/android/cast_jni_registrar.cc
diff --git a/chromecast/android/cast_jni_registrar.cc b/chromecast/android/cast_jni_registrar.cc
index eccbf0006ecbabbe30b654a1e4a4af84cbf39cc0..076be57635010479bd2ab13a3f4dcd6573ab87ea 100644
--- a/chromecast/android/cast_jni_registrar.cc
+++ b/chromecast/android/cast_jni_registrar.cc
@@ -8,12 +8,8 @@
 #include "base/android/jni_registrar.h"
 #include "base/macros.h"
 #include "chromecast/android/cast_metrics_helper_android.h"
-#include "chromecast/app/android/crash_handler.h"
-#include "chromecast/base/android/dumpstate_writer.h"
 #include "chromecast/base/android/system_time_change_notifier_android.h"
-#include "chromecast/base/cast_sys_info_android.h"
 #include "chromecast/base/chromecast_config_android.h"
-#include "chromecast/browser/android/cast_window_android.h"
 #include "chromecast/browser/android/cast_window_manager.h"
 #include "components/external_video_surface/component_jni_registrar.h"
 
@@ -24,12 +20,8 @@ namespace {
 
 static base::android::RegistrationMethod kMethods[] = {
   { "CastMetricsHelperAndroid", CastMetricsHelperAndroid::RegisterJni },
-  { "CastSysInfoAndroid", CastSysInfoAndroid::RegisterJni },
-  { "CastWindowAndroid", shell::CastWindowAndroid::RegisterJni },
   { "CastWindowManager", shell::RegisterCastWindowManager },
   { "ChromecastConfigAndroid", ChromecastConfigAndroid::RegisterJni },
-  { "CrashHandler", CrashHandler::RegisterCastCrashJni },
-  { "DumpstateWriter", DumpstateWriter::RegisterJni },
   { "ExternalVideoSurfaceContainer",
       external_video_surface::RegisterExternalVideoSurfaceJni },
   { "SystemTimeChangeNotifierAndroid",