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

chromecast/app/android/crash_handler.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMECAST_APP_ANDROID_CRASH_HANDLER_H_
 #define CHROMECAST_APP_ANDROID_CRASH_HANDLER_H_
 
 #include <jni.h>
 
 #include <memory>
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/macros.h"
 
 namespace chromecast {
 class CastCrashReporterClientAndroid;
 
 class CrashHandler {
  public:
   // Initializes the crash handler for attempting to upload crash dumps with
   // the current process's log file.
   // Must not be called more than once.
   static void Initialize(const std::string& process_type,
                          const base::FilePath& log_file_path);
 
   // Returns the directory location for crash dumps.
   static bool GetCrashDumpLocation(base::FilePath* crash_dir);
 
-  // Registers JNI methods for this module.
-  static bool RegisterCastCrashJni(JNIEnv* env);
-
  private:
   CrashHandler(const std::string& process_type,
                const base::FilePath& log_file_path);
   ~CrashHandler();
 
   void Initialize();
 
   // Starts a thread to periodically check for uploads
   void InitializeUploader();
 
   // Path to the current process's log file.
   base::FilePath log_file_path_;
 
   // Location to which crash dumps should be written.
   base::FilePath crash_dump_path_;
 
   std::string process_type_;
 
   std::unique_ptr<CastCrashReporterClientAndroid> crash_reporter_client_;
 
   DISALLOW_COPY_AND_ASSIGN(CrashHandler);
 };
 
 }  // namespace chromecast
 
 #endif  // CHROMECAST_APP_ANDROID_CRASH_HANDLER_H_