Use combined native/manual JNI registration.

base/android/jni_android.cc

 // Copyright (c) 2012 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.
 
 #include "base/android/jni_android.h"
 
 #include <map>
 
 #include "base/android/build_info.h"
 #include "base/android/jni_string.h"
 #include "base/android/jni_utils.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 
 namespace {
 using base::android::GetClass;
 using base::android::MethodID;
 using base::android::ScopedJavaLocalRef;
 
+bool g_disable_manual_jni_registration = false;
+
 JavaVM* g_jvm = NULL;
 // Leak the global app context, as it is used from a non-joinable worker thread
 // that may still be running at shutdown. There is no harm in doing this.
 base::LazyInstance<base::android::ScopedJavaGlobalRef<jobject> >::Leaky
     g_application_context = LAZY_INSTANCE_INITIALIZER;
 base::LazyInstance<base::android::ScopedJavaGlobalRef<jobject> >::Leaky
     g_class_loader = LAZY_INSTANCE_INITIALIZER;
 jmethodID g_class_loader_load_class_method_id = 0;
 
 std::string GetJavaExceptionInfo(JNIEnv* env, jthrowable java_throwable) {
@@ skipping 40 matching lines @@
                                 bytearray_output_stream_tostring)));
 
   return ConvertJavaStringToUTF8(exception_string);
 }
 
 }  // namespace
 
 namespace base {
 namespace android {
 
+bool IsManualJniRegistrationDisabled() {
+  return g_disable_manual_jni_registration;
+}
+
+void DisableManualJniRegistration() {
+  DCHECK(!g_disable_manual_jni_registration);
+  g_disable_manual_jni_registration = true;
+}
+
 JNIEnv* AttachCurrentThread() {
   DCHECK(g_jvm);
   JNIEnv* env = NULL;
   jint ret = g_jvm->AttachCurrentThread(&env, NULL);
   DCHECK_EQ(JNI_OK, ret);
   return env;
 }
 
 JNIEnv* AttachCurrentThreadWithName(const std::string& thread_name) {
   DCHECK(g_jvm);
@@ skipping 174 matching lines @@
     base::android::BuildInfo::GetInstance()->set_java_exception_info(
         GetJavaExceptionInfo(env, java_throwable));
   }
 
   // Now, feel good about it and die.
   CHECK(false) << "Please include Java exception stack in crash report";
 }
 
 }  // namespace android
 }  // namespace base