Selectively perform JNI registration in render processes on Android.

base/android/jni_android.h

 // 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.
 
 #ifndef BASE_ANDROID_JNI_ANDROID_H_
 #define BASE_ANDROID_JNI_ANDROID_H_
 
 #include <jni.h>
 #include <sys/types.h>
 
@@ skipping 36 matching lines @@
 #define JNI_LINK_SAVED_FRAME_POINTER
 
 #endif  // HAVE_TRACE_STACK_FRAME_POINTERS
 
 namespace base {
 namespace android {
 
 // Used to mark symbols to be exported in a shared library's symbol table.
 #define JNI_EXPORT __attribute__ ((visibility("default")))
 
-// Used to disable manual JNI registration in binaries that prefer to use native
-// JNI exports for startup performance. This is not compatible with the crazy
-// linker and so defaults to off. Call DisableManualJniRegistration at the very
-// beginning of JNI_OnLoad to use this.
-BASE_EXPORT bool IsManualJniRegistrationDisabled();
-BASE_EXPORT void DisableManualJniRegistration();
+// The level of JNI registration required.
+enum JniRegistrationType {
+  // Indicates the JNI registration type hasn't yet been set.
+  UNINITIALIZED_JNI_REGISTRATION,
+  // Register all native functions.
+  ALL_JNI_REGISTRATION,
+  // Register some native functions, as controlled by the jni_generator.
+  SELECTIVE_JNI_REGISTRATION,
+  // Do not register any native functions.
+  NO_JNI_REGISTRATION,
+};
+
+// Determine the type of JNI registration to complete.
+BASE_EXPORT void InitJniRegistrationType(JNIEnv* env, bool force_registration);
+
+BASE_EXPORT JniRegistrationType GetJniRegistrationType();
 
 // Contains the registration method information for initializing JNI bindings.
 struct RegistrationMethod {
   const char* name;
   bool (*func)(JNIEnv* env);
 };
 
 // Attaches the current thread to the VM (if necessary) and return the JNIEnv*.
 BASE_EXPORT JNIEnv* AttachCurrentThread();
 
@@ skipping 97 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(JNIStackFrameSaver);
 };
 
 #endif  // HAVE_TRACE_STACK_FRAME_POINTERS
 
 }  // namespace android
 }  // namespace base
 
 #endif  // BASE_ANDROID_JNI_ANDROID_H_