jni_generator: Always generate native exports.

base/android/jni_generator/testCalledByNatives.golden

 // 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.
 
 // This file is autogenerated by
 //     base/android/jni_generator/jni_generator.py
 // For
 //     org/chromium/TestJni
 
 #ifndef org_chromium_TestJni_JNI
 #define org_chromium_TestJni_JNI
 
 #include <jni.h>
 
 #include "base/android/jni_generator/jni_generator_helper.h"
 
 #include "base/android/jni_int_wrapper.h"
 
 // Step 1: forward declarations.
 namespace {
 const char kTestJniClassPath[] = "org/chromium/TestJni";
 const char kInfoBarClassPath[] = "org/chromium/TestJni$InfoBar";
 // Leaking this jclass as we cannot use LazyInstance from some threads.
-jclass g_TestJni_clazz = NULL;
-#define TestJni_clazz(env) g_TestJni_clazz
+base::subtle::AtomicWord g_TestJni_clazz __attribute__((unused)) = 0;
+#define TestJni_clazz(env) base::android::LazyGetClass(env, kTestJniClassPath, &g_TestJni_clazz)
 // Leaking this jclass as we cannot use LazyInstance from some threads.
-jclass g_InfoBar_clazz = NULL;
-#define InfoBar_clazz(env) g_InfoBar_clazz
+base::subtle::AtomicWord g_InfoBar_clazz __attribute__((unused)) = 0;
+#define InfoBar_clazz(env) base::android::LazyGetClass(env, kInfoBarClassPath, &g_InfoBar_clazz)
 
 }  // namespace
 
 // Step 2: method stubs.
 
 static base::subtle::AtomicWord g_TestJni_showConfirmInfoBar = 0;
 static ScopedJavaLocalRef<jobject> Java_TestJni_showConfirmInfoBar(JNIEnv* env,
     jobject obj, JniIntWrapper nativeInfoBar,
     jstring buttonOk,
     jstring buttonCancel,
@@ skipping 450 matching lines @@
   jobject ret =
       env->CallObjectMethod(obj,
           method_id);
   jni_generator::CheckException(env);
   return ScopedJavaLocalRef<jobject>(env, ret);
 }
 
 // Step 3: RegisterNatives.
 
 static bool RegisterNativesImpl(JNIEnv* env) {
-
-  g_TestJni_clazz = reinterpret_cast<jclass>(env->NewGlobalRef(
-      base::android::GetClass(env, kTestJniClassPath).obj()));
-  g_InfoBar_clazz = reinterpret_cast<jclass>(env->NewGlobalRef(
-      base::android::GetClass(env, kInfoBarClassPath).obj()));
+  if (base::android::IsManualJniRegistrationDisabled()) return true;
 
   return true;
 }
 
 #endif  // org_chromium_TestJni_JNI