Selectively perform JNI registration in render processes on Android.

base/android/jni_android.h

Index: base/android/jni_android.h
diff --git a/base/android/jni_android.h b/base/android/jni_android.h
index 96746539b28c24322abdfb0bb7170dcfadaadf2c..b7cdeab56c34ecf67ec1ce4e64f68aaf97572624 100644
--- a/base/android/jni_android.h
+++ b/base/android/jni_android.h
@@ -54,12 +54,22 @@ 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);
+
+BASE_EXPORT JniRegistrationType GetJniRegistrationType();
 
 // Contains the registration method information for initializing JNI bindings.
 struct RegistrationMethod {