Do not register IME app window in launcher

extensions/browser/app_window/app_window.cc

Index: extensions/browser/app_window/app_window.cc
diff --git a/extensions/browser/app_window/app_window.cc b/extensions/browser/app_window/app_window.cc
index 83f29714f43fc036ca6371e82a0fa4f2ebf2827e..9ed59460e2177cacd2283ce69db722df041501cd 100644
--- a/extensions/browser/app_window/app_window.cc
+++ b/extensions/browser/app_window/app_window.cc
@@ -242,6 +242,7 @@ AppWindow::AppWindow(BrowserContext* context,
       is_hidden_(false),
       cached_always_on_top_(false),
       requested_alpha_enabled_(false),
+      is_ime_window_(false),
       image_loader_ptr_factory_(this) {
   ExtensionsBrowserClient* client = ExtensionsBrowserClient::Get();
   CHECK(!client->IsGuestSession(context) || context->IsOffTheRecord())
@@ -277,6 +278,8 @@ void AppWindow::Init(const GURL& url,
 
   requested_alpha_enabled_ = new_params.alpha_enabled;
 
+  is_ime_window_ = params.is_ime_window;
+
   AppWindowClient* app_window_client = AppWindowClient::Get();
   native_app_window_.reset(
       app_window_client->CreateNativeAppWindow(this, &new_params));