Transparent apps support

chrome/browser/extensions/api/app_window/app_window_api.cc

Index: chrome/browser/extensions/api/app_window/app_window_api.cc
diff --git a/chrome/browser/extensions/api/app_window/app_window_api.cc b/chrome/browser/extensions/api/app_window/app_window_api.cc
index 2bed9f500d9b5babe969c3658015476cf1ceae03..a510663619cc10869e41f682cec94acbbb321235 100644
--- a/chrome/browser/extensions/api/app_window/app_window_api.cc
+++ b/chrome/browser/extensions/api/app_window/app_window_api.cc
@@ -140,8 +140,7 @@ bool AppWindowCreateFunction::RunImpl() {
 
     if (options->frame.get()) {
       if (*options->frame == kHtmlFrameOption &&
-          CommandLine::ForCurrentProcess()->HasSwitch(
-              switches::kEnableExperimentalExtensionApis)) {
+          GetExtension()->HasAPIPermission(APIPermission::kExperimental)) {
         create_params.frame = ShellWindow::CreateParams::FRAME_NONE;
         inject_html_titlebar = true;
       } else if (*options->frame == kNoneFrameOption) {
@@ -151,6 +150,11 @@ bool AppWindowCreateFunction::RunImpl() {
       }
     }
 
+    if (options->transparent_background.get() &&
+        GetExtension()->HasAPIPermission(APIPermission::kExperimental)) {
+      create_params.transparent_background = *options->transparent_background;
+    }
+
     gfx::Size& minimum_size = create_params.minimum_size;
     if (options->min_width.get())
       minimum_size.set_width(*options->min_width);