Add AppWindow.setVisibleOnAllWorkspaces.

extensions/browser/api/app_window/app_window_api.cc

Index: extensions/browser/api/app_window/app_window_api.cc
diff --git a/extensions/browser/api/app_window/app_window_api.cc b/extensions/browser/api/app_window/app_window_api.cc
index b6ecd5afb36bf282625b899f89af49205c2d430c..2a80004ecdf69ee26734dc5afa6eef3032d220db 100644
--- a/extensions/browser/api/app_window/app_window_api.cc
+++ b/extensions/browser/api/app_window/app_window_api.cc
@@ -56,6 +56,8 @@ const char kAlphaEnabledMissingPermission[] =
     "The alphaEnabled option requires app.window.alpha permission.";
 const char kAlphaEnabledNeedsFrameNone[] =
     "The alphaEnabled option can only be used with \"frame: 'none'\".";
+const char kVisibleOnAllWorkspacesWrongChannel[] =
+    "The visibleOnAllWorkspaces option requires dev channel or newer.";
 }  // namespace app_window_constants
 
 const char kNoneFrameOption[] = "none";
@@ -259,6 +261,15 @@ bool AppWindowCreateFunction::RunAsync() {
     if (options->focused.get())
       create_params.focused = *options->focused.get();
 
+    if (options->visible_on_all_workspaces.get()) {
+      if (AppsClient::Get()->IsCurrentChannelOlderThanDev()) {
+        error_ = app_window_constants::kVisibleOnAllWorkspacesWrongChannel;
+        return false;
+      }
+      create_params.visible_on_all_workspaces =
+          *options->visible_on_all_workspaces.get();
+    }
+
     if (options->type != app_window::WINDOW_TYPE_PANEL) {
       switch (options->state) {
         case app_window::STATE_NONE: