Allow component IME extension use app.window and add 'ime' window type for app window

chrome/browser/ui/views/apps/chrome_native_app_window_views.cc

Index: chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
diff --git a/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc b/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
index 18765b787549a89f94b9773205bb0a61688f8397..4c1a9fb225a546e480729137bef14611ee3a9106 100644
--- a/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
+++ b/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
@@ -51,6 +51,10 @@
 #include "ui/aura/window_observer.h"
 #endif
 
+#if defined(OS_CHROMEOS)
+#include "ash/shell_window_ids.h"
+#endif
+
 using extensions::AppWindow;
 
 namespace {
@@ -226,6 +230,14 @@ void ChromeNativeAppWindowViews::InitializeDefaultWindow(
 #endif
 
   OnBeforeWidgetInit(&init_params, widget());
+#if defined(OS_CHROMEOS)
+  if (create_params.is_ime_window) {
+    // Puts ime windows into ime window container.
+    init_params.parent = ash::Shell::GetContainer(
+        ash::Shell::GetPrimaryRootWindow(),
+        ash::kShellWindowId_ImeWindowParentContainer);
+  }
+#endif
   widget()->Init(init_params);
 
   // The frame insets are required to resolve the bounds specifications
@@ -254,6 +266,11 @@ void ChromeNativeAppWindowViews::InitializeDefaultWindow(
     wm::SetShadowType(widget()->GetNativeWindow(), wm::SHADOW_TYPE_NONE);
   }
 
+#if defined(OS_CHROMEOS)
+  if (create_params.is_ime_window)
+    return;
+#endif
+
   // Register accelarators supported by app windows.
   // TODO(jeremya/stevenjb): should these be registered for panels too?
   views::FocusManager* focus_manager = GetFocusManager();