android: Realign stack pointer on JNI entry.

base/android/jni_generator/testInnerClassNatives.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
@@ skipping 16 matching lines @@
 base::subtle::AtomicWord g_MyInnerClass_clazz __attribute__((unused)) = 0;
 #define MyInnerClass_clazz(env) base::android::LazyGetClass(env, kMyInnerClassClassPath, &g_MyInnerClass_clazz)
 
 }  // namespace
 
 // Step 2: method stubs.
 
 static jint Init(JNIEnv* env, const base::android::JavaParamRef<jobject>&
     jcaller);
 
-extern "C" __attribute__((visibility("default")))
-jint Java_org_chromium_TestJni_00024MyInnerClass_nativeInit(JNIEnv* env, jobject
+JNI_GENERATOR_EXPORT jint
+    Java_org_chromium_TestJni_00024MyInnerClass_nativeInit(JNIEnv* env, jobject
     jcaller) {
   return Init(env, base::android::JavaParamRef<jobject>(env, jcaller));
 }
 
 // Step 3: RegisterNatives.
 
 static const JNINativeMethod kMethodsMyInnerClass[] = {
     { "nativeInit",
 "("
 ")"
@@ skipping 12 matching lines @@
                            kMethodsMyInnerClassSize) < 0) {
     jni_generator::HandleRegistrationError(
         env, MyInnerClass_clazz(env), __FILE__);
     return false;
   }
 
   return true;
 }
 
 #endif  // org_chromium_TestJni_JNI