Show error message for desktop capture related APIs on Aura Android

chrome/browser/ui/views/desktop_media_picker_views.cc

Index: chrome/browser/ui/views/desktop_media_picker_views.cc
diff --git a/chrome/browser/ui/views/desktop_media_picker_views.cc b/chrome/browser/ui/views/desktop_media_picker_views.cc
index 7c438b20b530dd6999cc66e3a07897776559586f..c3ec6abaec588b3294fda8f6acc89a4dce44dfb5 100644
--- a/chrome/browser/ui/views/desktop_media_picker_views.cc
+++ b/chrome/browser/ui/views/desktop_media_picker_views.cc
@@ -52,7 +52,9 @@ const char kDesktopMediaSourceViewClassName[] =
 
 DesktopMediaID::Id AcceleratedWidgetToDesktopMediaId(
     gfx::AcceleratedWidget accelerated_widget) {
-#if defined(OS_WIN)
+#if defined(OS_WIN) || defined(OS_ANDROID)

[sky, 2015/11/19 20:40:41]

Is it worth a NOT_IMPLEMENTED() for android?

[bshe, 2015/11/20 15:44:29]

Done.

+  // TODO(bshe): We may need to revisit this for Android platform. See
+  // crbug.com/557424.
   return reinterpret_cast<DesktopMediaID::Id>(accelerated_widget);
 #else
   return static_cast<DesktopMediaID::Id>(accelerated_widget);