Revert of Remove HostDesktopType from AppLaunchParams

chrome/browser/ui/extensions/app_launch_params.h

Index: chrome/browser/ui/extensions/app_launch_params.h
diff --git a/chrome/browser/ui/extensions/app_launch_params.h b/chrome/browser/ui/extensions/app_launch_params.h
index 7d34e714795cce6b214d2472b32bd38affe1c4fb..3b69479c6c798b17f29bb1d516b9fda03de41f45 100644
--- a/chrome/browser/ui/extensions/app_launch_params.h
+++ b/chrome/browser/ui/extensions/app_launch_params.h
@@ -29,12 +29,21 @@ struct AppLaunchParams {
                   WindowOpenDisposition disposition,
                   extensions::AppLaunchSource source);
 
+  // Helper to create AppLaunchParams using extensions::GetLaunchContainer with
+  // LAUNCH_TYPE_REGULAR to check for a user-configured container.
+  AppLaunchParams(Profile* profile,
+                  const extensions::Extension* extension,
+                  WindowOpenDisposition disposition,
+                  extensions::AppLaunchSource source);
+
   // Helper to create AppLaunchParams using event flags that allows user to
   // override the user-configured container using modifier keys, falling back to
-  // extensions::GetLaunchContainer() with no modifiers.
+  // extensions::GetLaunchContainer() with no modifiers. |desktop_type|
+  // indicates the desktop upon which to launch (Ash or Native).
   AppLaunchParams(Profile* profile,
                   const extensions::Extension* extension,
                   WindowOpenDisposition disposition,
+                  chrome::HostDesktopType desktop_type,
                   extensions::AppLaunchSource source);
 
   ~AppLaunchParams();
@@ -51,6 +60,9 @@ struct AppLaunchParams {
   // If container is TAB, this field controls how the tab is opened.
   WindowOpenDisposition disposition;
 
+  // The desktop type to launch on. Uses GetActiveDesktop() if unspecified.
+  chrome::HostDesktopType desktop_type;
+
   // If non-empty, use override_url in place of the application's launch url.
   GURL override_url;