Bug 1661450 - Copy NPAPI related definitions from Android for Wayland r=stransky

Differential Revision: https://phabricator.services.mozilla.com/D88799

dom/plugins/ipc/PluginInstanceChild.cpp

@@ -1247,7 +1247,7 @@ mozilla::ipc::IPCResult PluginInstanceChild::AnswerNPP_SetWindow(
 
 #elif defined(ANDROID)
   // TODO: Need Android impl
-#elif defined(MOZ_WIDGET_UIKIT)
+#elif defined(MOZ_WIDGET_UIKIT) || defined(MOZ_WAYLAND)
   // Don't care
 #else
 #  error Implement me for your OS

dom/plugins/ipc/PluginInstanceParent.cpp

@@ -230,8 +230,8 @@ PluginInstanceParent::AnswerNPN_GetValue_NPNVnetscapeWindow(
   XID id;
 #elif defined(XP_DARWIN)
   intptr_t id;
-#elif defined(ANDROID)
-  // TODO: Need Android impl
+#elif defined(ANDROID) || defined(MOZ_WAYLAND)
+  // TODO: Need impl
   int id;
 #else
 #  warning Implement me

dom/plugins/ipc/PluginMessageUtils.h

@@ -115,7 +115,7 @@ struct NPAudioDeviceStateChangedIPC {
 typedef HWND NativeWindowHandle;
 #elif defined(MOZ_X11)
 typedef XID NativeWindowHandle;
-#elif defined(XP_DARWIN) || defined(ANDROID)
+#elif defined(XP_DARWIN) || defined(ANDROID) || defined(MOZ_WAYLAND)
 typedef intptr_t NativeWindowHandle;  // never actually used, will always be 0
 #else
 #  error Need NativeWindowHandle for this platform