app_shell: Add audio and video capture support

extensions/shell/browser/default_shell_app_window_controller.cc

Index: extensions/shell/browser/default_shell_app_window_controller.cc
diff --git a/extensions/shell/browser/default_shell_app_window_controller.cc b/extensions/shell/browser/default_shell_app_window_controller.cc
index 778bc094218799a98502c7bb788e10c535e75566..0fc569c2191ae5187e8ce595feae98bc7eb0a17f 100644
--- a/extensions/shell/browser/default_shell_app_window_controller.cc
+++ b/extensions/shell/browser/default_shell_app_window_controller.cc
@@ -24,11 +24,12 @@ DefaultShellAppWindowController::~DefaultShellAppWindowController() {
 }
 
 ShellAppWindow* DefaultShellAppWindowController::CreateAppWindow(
-    content::BrowserContext* context) {
+    content::BrowserContext* context,
+    const Extension* extension) {
   aura::Window* root_window = shell_desktop_controller_->host()->window();
 
   app_window_.reset(new ShellAppWindow);
-  app_window_->Init(context, root_window->bounds().size());
+  app_window_->Init(context, extension, root_window->bounds().size());
 
   // Attach the web contents view to our window hierarchy.
   aura::Window* content = app_window_->GetNativeWindow();