Selectively perform JNI registration in render processes on Android.

base/android/jni_android.cc

Index: base/android/jni_android.cc
diff --git a/base/android/jni_android.cc b/base/android/jni_android.cc
index 02e264c05703494444a23bae5fabc8875e7ec1f2..c58b6810805bb253dc75420a8a1b5293bfff7f09 100644
--- a/base/android/jni_android.cc
+++ b/base/android/jni_android.cc
@@ -11,6 +11,7 @@
 #include "base/android/build_info.h"
 #include "base/android/jni_string.h"
 #include "base/android/jni_utils.h"
+#include "base/android/library_loader/library_loader_hooks.h"
 #include "base/debug/debugging_flags.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ -21,7 +22,8 @@ using base::android::GetClass;
 using base::android::MethodID;
 using base::android::ScopedJavaLocalRef;
 
-bool g_disable_manual_jni_registration = false;
+base::android::JniRegistrationType g_jni_registration_type =
+    base::android::UNINITIALIZED_JNI_REGISTRATION;
 
 JavaVM* g_jvm = NULL;
 base::LazyInstance<base::android::ScopedJavaGlobalRef<jobject> >::Leaky
@@ -38,13 +40,26 @@ base::LazyInstance<base::ThreadLocalPointer<void>>::Leaky
 namespace base {
 namespace android {
 
-bool IsManualJniRegistrationDisabled() {
-  return g_disable_manual_jni_registration;
+void InitJniRegistrationType(JNIEnv* env) {
+  DCHECK(g_jni_registration_type == UNINITIALIZED_JNI_REGISTRATION);
+  switch (GetLibraryProcessType(env)) {
+    case PROCESS_WEBVIEW:
+    case PROCESS_WEBVIEW_CHILD:
+      g_jni_registration_type = NO_JNI_REGISTRATION;
+      break;
+    case PROCESS_BROWSER:
+      g_jni_registration_type = ALL_JNI_REGISTRATION;
+      break;
+    case PROCESS_CHILD:
+      g_jni_registration_type = SELECTIVE_JNI_REGISTRATION;
+      break;
+    default:
+      NOTREACHED();
+  }
 }
 
-void DisableManualJniRegistration() {
-  DCHECK(!g_disable_manual_jni_registration);
-  g_disable_manual_jni_registration = true;
+JniRegistrationType GetJniRegistrationType() {
+  return g_jni_registration_type;
 }
 
 JNIEnv* AttachCurrentThread() {