--- a/mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoEditableChild.java
+++ b/mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoEditableChild.java
@@ -153,22 +153,24 @@ final class GeckoEditableChild extends J
         } catch (final RemoteException e) {
             Log.e(LOGTAG, "Remote call failed", e);
             return;
         }
     }
 
     @WrapForJNI(calledFrom = "gecko")
     private void notifyIMEContext(final int state, final String typeHint,
-                                  final String modeHint, final String actionHint) {
+                                  final String modeHint, final String actionHint,
+                                  final boolean inPrivateBrowsing) {
         if (DEBUG) {
             ThreadUtils.assertOnGeckoThread();
             Log.d(LOGTAG, "notifyIMEContext(" + GeckoEditable.getConstantName(
                           GeckoEditableListener.class, "IME_STATE_", state) + ", \"" +
-                          typeHint + "\", \"" + modeHint + "\", \"" + actionHint + "\")");
+                          typeHint + "\", \"" + modeHint + "\", \"" + actionHint + "\", " +
+                          "inPrivateBrowsing=" + inPrivateBrowsing + ")");
         }
 
         try {
             mEditableParent.notifyIMEContext(state, typeHint, modeHint, actionHint);
         } catch (final RemoteException e) {
             Log.e(LOGTAG, "Remote call failed", e);
         }
     }

--- a/widget/android/GeckoEditableSupport.cpp
+++ b/widget/android/GeckoEditableSupport.cpp
@@ -1211,17 +1211,18 @@ GeckoEditableSupport::SetInputContext(co
 
         mIMEUpdatingContext = false;
         if (!widget || widget->Destroyed()) {
             return;
         }
         mEditable->NotifyIMEContext(mInputContext.mIMEState.mEnabled,
                                     mInputContext.mHTMLInputType,
                                     mInputContext.mHTMLInputInputmode,
-                                    mInputContext.mActionHint);
+                                    mInputContext.mActionHint,
+                                    mInputContext.mInPrivateBrowsing);
     });
 }
 
 InputContext
 GeckoEditableSupport::GetInputContext()
 {
     InputContext context = mInputContext;
     context.mIMEState.mOpen = IMEState::OPEN_STATE_NOT_SUPPORTED;

--- a/widget/android/GeneratedJNIWrappers.cpp
+++ b/widget/android/GeneratedJNIWrappers.cpp
@@ -643,19 +643,19 @@ constexpr char GeckoEditableChild::Notif
 auto GeckoEditableChild::NotifyIME(int32_t a0) const -> void
 {
     return mozilla::jni::Method<NotifyIME_t>::Call(GeckoEditableChild::mCtx, nullptr, a0);
 }
 
 constexpr char GeckoEditableChild::NotifyIMEContext_t::name[];
 constexpr char GeckoEditableChild::NotifyIMEContext_t::signature[];
 
-auto GeckoEditableChild::NotifyIMEContext(int32_t a0, mozilla::jni::String::Param a1, mozilla::jni::String::Param a2, mozilla::jni::String::Param a3) const -> void
+auto GeckoEditableChild::NotifyIMEContext(int32_t a0, mozilla::jni::String::Param a1, mozilla::jni::String::Param a2, mozilla::jni::String::Param a3, bool a4) const -> void
 {
-    return mozilla::jni::Method<NotifyIMEContext_t>::Call(GeckoEditableChild::mCtx, nullptr, a0, a1, a2, a3);
+    return mozilla::jni::Method<NotifyIMEContext_t>::Call(GeckoEditableChild::mCtx, nullptr, a0, a1, a2, a3, a4);
 }
 
 constexpr char GeckoEditableChild::OnDefaultKeyEvent_t::name[];
 constexpr char GeckoEditableChild::OnDefaultKeyEvent_t::signature[];
 
 auto GeckoEditableChild::OnDefaultKeyEvent(mozilla::jni::Object::Param a0) const -> void
 {
     return mozilla::jni::Method<OnDefaultKeyEvent_t>::Call(GeckoEditableChild::mCtx, nullptr, a0);

--- a/widget/android/GeneratedJNIWrappers.h
+++ b/widget/android/GeneratedJNIWrappers.h
@@ -1847,30 +1847,31 @@ public:
     struct NotifyIMEContext_t {
         typedef GeckoEditableChild Owner;
         typedef void ReturnType;
         typedef void SetterType;
         typedef mozilla::jni::Args<
                 int32_t,
                 mozilla::jni::String::Param,
                 mozilla::jni::String::Param,
-                mozilla::jni::String::Param> Args;
+                mozilla::jni::String::Param,
+                bool> Args;
         static constexpr char name[] = "notifyIMEContext";
         static constexpr char signature[] =
-                "(ILjava/lang/String;Ljava/lang/String;Ljava/lang/String;)V";
+                "(ILjava/lang/String;Ljava/lang/String;Ljava/lang/String;Z)V";
         static const bool isStatic = false;
         static const mozilla::jni::ExceptionMode exceptionMode =
                 mozilla::jni::ExceptionMode::ABORT;
         static const mozilla::jni::CallingThread callingThread =
                 mozilla::jni::CallingThread::GECKO;
         static const mozilla::jni::DispatchTarget dispatchTarget =
                 mozilla::jni::DispatchTarget::CURRENT;
     };
 
-    auto NotifyIMEContext(int32_t, mozilla::jni::String::Param, mozilla::jni::String::Param, mozilla::jni::String::Param) const -> void;
+    auto NotifyIMEContext(int32_t, mozilla::jni::String::Param, mozilla::jni::String::Param, mozilla::jni::String::Param, bool) const -> void;
 
     struct OnDefaultKeyEvent_t {
         typedef GeckoEditableChild Owner;
         typedef void ReturnType;
         typedef void SetterType;
         typedef mozilla::jni::Args<
                 mozilla::jni::Object::Param> Args;
         static constexpr char name[] = "onDefaultKeyEvent";