diff --git a/Ladybird/Android/src/main/cpp/ImageDecoderService.cpp b/Ladybird/Android/src/main/cpp/ImageDecoderService.cpp
index 867168b94ce..40c21470059 100644
--- a/Ladybird/Android/src/main/cpp/ImageDecoderService.cpp
+++ b/Ladybird/Android/src/main/cpp/ImageDecoderService.cpp
@@ -6,6 +6,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include "LadybirdServiceBase.h"
 #include <ImageDecoder/ConnectionFromClient.h>
 #include <LibCore/EventLoop.h>
 #include <LibIPC/SingleServer.h>
diff --git a/Ladybird/Android/src/main/cpp/LadybirdActivity.cpp b/Ladybird/Android/src/main/cpp/LadybirdActivity.cpp
index ba1ab146fbe..f3ad098bda0 100644
--- a/Ladybird/Android/src/main/cpp/LadybirdActivity.cpp
+++ b/Ladybird/Android/src/main/cpp/LadybirdActivity.cpp
@@ -30,6 +30,10 @@ static OwnPtr<Core::EventLoop> s_main_event_loop;
 static jobject s_java_instance;
 static jmethodID s_schedule_event_loop_method;
 
+
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_LadybirdActivity_initNativeCode(JNIEnv*, jobject, jstring, jstring, jobject);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_LadybirdActivity_initNativeCode(JNIEnv* env, jobject thiz, jstring resource_dir, jstring tag_name, jobject timer_service)
 {
@@ -78,6 +82,9 @@ Java_org_serenityos_ladybird_LadybirdActivity_initNativeCode(JNIEnv* env, jobjec
     s_application = make<WebView::Application>(0, nullptr);
 }
 
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_LadybirdActivity_execMainEventLoop(JNIEnv*, jobject /* thiz */);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_LadybirdActivity_execMainEventLoop(JNIEnv*, jobject /* thiz */)
 {
@@ -86,6 +93,9 @@ Java_org_serenityos_ladybird_LadybirdActivity_execMainEventLoop(JNIEnv*, jobject
     }
 }
 
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_LadybirdActivity_disposeNativeCode(JNIEnv*, jobject /* thiz */);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_LadybirdActivity_disposeNativeCode(JNIEnv* env, jobject /* thiz */)
 {
diff --git a/Ladybird/Android/src/main/cpp/LadybirdServiceBaseJNI.cpp b/Ladybird/Android/src/main/cpp/LadybirdServiceBaseJNI.cpp
index 726fe3f3725..dee876890b1 100644
--- a/Ladybird/Android/src/main/cpp/LadybirdServiceBaseJNI.cpp
+++ b/Ladybird/Android/src/main/cpp/LadybirdServiceBaseJNI.cpp
@@ -13,6 +13,9 @@
 
 JavaVM* global_vm;
 
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_LadybirdServiceBase_nativeThreadLoop(JNIEnv*, jobject /* thiz */, jint);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_LadybirdServiceBase_nativeThreadLoop(JNIEnv*, jobject /* thiz */, jint ipc_socket)
 {
@@ -24,6 +27,9 @@ Java_org_serenityos_ladybird_LadybirdServiceBase_nativeThreadLoop(JNIEnv*, jobje
     }
 }
 
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_LadybirdServiceBase_initNativeCode(JNIEnv*, jobject /* thiz */, jstring, jstring);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_LadybirdServiceBase_initNativeCode(JNIEnv* env, jobject /* thiz */, jstring resource_dir, jstring tag_name)
 {
diff --git a/Ladybird/Android/src/main/cpp/RequestServerService.cpp b/Ladybird/Android/src/main/cpp/RequestServerService.cpp
index eecb49348da..e38732bda4a 100644
--- a/Ladybird/Android/src/main/cpp/RequestServerService.cpp
+++ b/Ladybird/Android/src/main/cpp/RequestServerService.cpp
@@ -5,6 +5,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include "LadybirdServiceBase.h"
 #include <AK/LexicalPath.h>
 #include <AK/OwnPtr.h>
 #include <Ladybird/Utilities.h>
@@ -20,7 +21,7 @@
 #include <RequestServer/HttpsProtocol.h>
 
 // FIXME: Share b/w RequestServer and WebSocket
-ErrorOr<ByteString> find_certificates(StringView serenity_resource_root)
+static ErrorOr<ByteString> find_certificates(StringView serenity_resource_root)
 {
     auto cert_path = ByteString::formatted("{}/res/ladybird/cacert.pem", serenity_resource_root);
     if (!FileSystem::exists(cert_path))
diff --git a/Ladybird/Android/src/main/cpp/TimerExecutorService.cpp b/Ladybird/Android/src/main/cpp/TimerExecutorService.cpp
index e60f3c77bea..e053a11f1b0 100644
--- a/Ladybird/Android/src/main/cpp/TimerExecutorService.cpp
+++ b/Ladybird/Android/src/main/cpp/TimerExecutorService.cpp
@@ -9,6 +9,9 @@
 #include <LibCore/ThreadEventQueue.h>
 #include <jni.h>
 
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_TimerExecutorService_00024Timer_nativeRun(JNIEnv*, jobject /* thiz */, jlong, jlong);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_TimerExecutorService_00024Timer_nativeRun(JNIEnv*, jobject /* thiz */, jlong native_data, jlong id)
 {
diff --git a/Ladybird/Android/src/main/cpp/WebContentServiceJNI.cpp b/Ladybird/Android/src/main/cpp/WebContentServiceJNI.cpp
index fe5803b4c08..1e756ffff88 100644
--- a/Ladybird/Android/src/main/cpp/WebContentServiceJNI.cpp
+++ b/Ladybird/Android/src/main/cpp/WebContentServiceJNI.cpp
@@ -6,6 +6,7 @@
 
 #include "JNIHelpers.h"
 #include "LadybirdServiceBase.h"
+#include "WebContentService.h"
 #include <jni.h>
 
 jobject global_instance;
@@ -13,6 +14,9 @@ jclass global_class_reference;
 jmethodID bind_request_server_method;
 jmethodID bind_image_decoder_method;
 
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_WebContentService_nativeInit(JNIEnv*, jobject);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_WebContentService_nativeInit(JNIEnv* env, jobject thiz)
 {
diff --git a/Ladybird/Android/src/main/cpp/WebViewImplementationNativeJNI.cpp b/Ladybird/Android/src/main/cpp/WebViewImplementationNativeJNI.cpp
index be3f9cce869..b720398e6b9 100644
--- a/Ladybird/Android/src/main/cpp/WebViewImplementationNativeJNI.cpp
+++ b/Ladybird/Android/src/main/cpp/WebViewImplementationNativeJNI.cpp
@@ -14,6 +14,9 @@ jmethodID WebViewImplementationNative::bind_webcontent_method;
 jmethodID WebViewImplementationNative::invalidate_layout_method;
 jmethodID WebViewImplementationNative::on_load_start_method;
 
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_WebViewImplementation_00024Companion_nativeClassInit(JNIEnv*, jobject /* thiz */);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_WebViewImplementation_00024Companion_nativeClassInit(JNIEnv* env, jobject /* thiz */)
 {
@@ -39,6 +42,9 @@ Java_org_serenityos_ladybird_WebViewImplementation_00024Companion_nativeClassIni
     WebViewImplementationNative::on_load_start_method = method;
 }
 
+extern "C" JNIEXPORT jlong JNICALL
+Java_org_serenityos_ladybird_WebViewImplementation_nativeObjectInit(JNIEnv*, jobject);
+
 extern "C" JNIEXPORT jlong JNICALL
 Java_org_serenityos_ladybird_WebViewImplementation_nativeObjectInit(JNIEnv* env, jobject thiz)
 {
@@ -47,6 +53,9 @@ Java_org_serenityos_ladybird_WebViewImplementation_nativeObjectInit(JNIEnv* env,
     return instance;
 }
 
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_WebViewImplementation_nativeObjectDispose(JNIEnv*, jobject /* thiz */, jlong);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_WebViewImplementation_nativeObjectDispose(JNIEnv* env, jobject /* thiz */, jlong instance)
 {
@@ -55,6 +64,9 @@ Java_org_serenityos_ladybird_WebViewImplementation_nativeObjectDispose(JNIEnv* e
     delete impl;
 }
 
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_WebViewImplementation_nativeDrawIntoBitmap(JNIEnv*, jobject /* thiz */, jlong, jobject);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_WebViewImplementation_nativeDrawIntoBitmap(JNIEnv* env, jobject /* thiz */, jlong instance, jobject bitmap)
 {
@@ -70,6 +82,9 @@ Java_org_serenityos_ladybird_WebViewImplementation_nativeDrawIntoBitmap(JNIEnv*
     AndroidBitmap_unlockPixels(env, bitmap);
 }
 
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_WebViewImplementation_nativeSetViewportGeometry(JNIEnv*, jobject /* thiz */, jlong, jint, jint);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_WebViewImplementation_nativeSetViewportGeometry(JNIEnv*, jobject /* thiz */, jlong instance, jint w, jint h)
 {
@@ -77,6 +92,9 @@ Java_org_serenityos_ladybird_WebViewImplementation_nativeSetViewportGeometry(JNI
     impl->set_viewport_geometry(w, h);
 }
 
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_WebViewImplementation_nativeLoadURL(JNIEnv*, jobject /* thiz */, jlong, jstring);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_WebViewImplementation_nativeLoadURL(JNIEnv* env, jobject /* thiz */, jlong instance, jstring url)
 {
@@ -87,6 +105,9 @@ Java_org_serenityos_ladybird_WebViewImplementation_nativeLoadURL(JNIEnv* env, jo
     impl->load(ak_url);
 }
 
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_WebViewImplementation_nativeSetDevicePixelRatio(JNIEnv*, jobject /* thiz */, jlong instance, jfloat);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_WebViewImplementation_nativeSetDevicePixelRatio(JNIEnv*, jobject /* thiz */, jlong instance, jfloat ratio)
 {
@@ -94,6 +115,9 @@ Java_org_serenityos_ladybird_WebViewImplementation_nativeSetDevicePixelRatio(JNI
     impl->set_device_pixel_ratio(ratio);
 }
 
+extern "C" JNIEXPORT void JNICALL
+Java_org_serenityos_ladybird_WebViewImplementation_nativeMouseEvent(JNIEnv*, jobject /* thiz */, jlong, jint, jfloat, jfloat, jfloat, jfloat);
+
 extern "C" JNIEXPORT void JNICALL
 Java_org_serenityos_ladybird_WebViewImplementation_nativeMouseEvent(JNIEnv*, jobject /* thiz */, jlong instance, jint event_type, jfloat x, jfloat y, jfloat raw_x, jfloat raw_y)
 {