chromeos: Make "mobile network" and "set time" dialogs work with mash

chrome/browser/chromeos/ui/choose_mobile_network_dialog.h

Index: chrome/browser/chromeos/ui/choose_mobile_network_dialog.h
diff --git a/chrome/browser/chromeos/ui/choose_mobile_network_dialog.h b/chrome/browser/chromeos/ui/choose_mobile_network_dialog.h
index 0d656306db39fcef21da1f37489de4d6f8cc697a..7cef16812f76bd678438b5465c40d1f6e810108b 100644
--- a/chrome/browser/chromeos/ui/choose_mobile_network_dialog.h
+++ b/chrome/browser/chromeos/ui/choose_mobile_network_dialog.h
@@ -5,7 +5,6 @@
 #ifndef CHROME_BROWSER_CHROMEOS_UI_CHOOSE_MOBILE_NETWORK_DIALOG_H_
 #define CHROME_BROWSER_CHROMEOS_UI_CHOOSE_MOBILE_NETWORK_DIALOG_H_
 
-#include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/web_dialogs/web_dialog_delegate.h"
@@ -15,9 +14,12 @@ namespace chromeos {
 // Dialog for manual selection of cellular network.
 class ChooseMobileNetworkDialog : public ui::WebDialogDelegate {
  public:
-  // Shows the dialog box.
+  // Shows the dialog box. |owning_window| may be null.

[msw, 2016/10/24 22:18:09]

nit: Maybe explain the significance of |owning_window| and what happens when
it's null?

[James Cook, 2016/10/25 00:29:04]

Done (and renamed to parent).

   static void ShowDialog(gfx::NativeWindow owning_window);
 
+  // Shows the dialog in an ash window container.
+  static void ShowDialogInContainer(int container_id);
+
  private:
   ChooseMobileNetworkDialog();