Transparent apps support

chrome/common/extensions/api/app_window.idl

Index: chrome/common/extensions/api/app_window.idl
diff --git a/chrome/common/extensions/api/app_window.idl b/chrome/common/extensions/api/app_window.idl
index 7eed76f60d2e5a365569ad789723f5c20d5dff8b..156df21a4f7c8701b65145f078c84e38d7660ce4 100644
--- a/chrome/common/extensions/api/app_window.idl
+++ b/chrome/common/extensions/api/app_window.idl
@@ -48,8 +48,11 @@ namespace app.window {
     // Window type: 'shell' (the default) is the only currently supported value.
     DOMString? type;
 
-    // Frame type: 'none' or 'chrome' (defaults to 'chrome').
+    // EXPERIMENTAL: Frame type: 'none' or 'chrome' (defaults to 'chrome').

[Mihai Parparita -not on Chrome, 2012/09/28 19:15:34]

This isn't an experimental option.

[Bernie, 2012/10/10 21:05:01]

What I meant to say is that this option requires the experimental API permission
(now fixed).

     DOMString? frame;
+
+    // EXPERIMENTAL: Enable window background transparency.
+    boolean? transparentBackground;

[jeremya, 2012/10/04 22:12:56]

Can you add that it's only supported on ash?

[Bernie, 2012/10/10 21:05:01]

Done.

   };
 
   callback CreateWindowCallback =