Move native_app_window code to apps areas

chrome/browser/ui/apps/chrome_shell_window_delegate.cc

Index: chrome/browser/ui/apps/chrome_shell_window_delegate.cc
diff --git a/chrome/browser/ui/apps/chrome_shell_window_delegate.cc b/chrome/browser/ui/apps/chrome_shell_window_delegate.cc
index 80b810ffc3bd6bf9a83a54469ede7f1bd2557fa6..d6177bb891c763fc467ceef2973d20757dc3b0e0 100644
--- a/chrome/browser/ui/apps/chrome_shell_window_delegate.cc
+++ b/chrome/browser/ui/apps/chrome_shell_window_delegate.cc
@@ -25,8 +25,6 @@
 #include "ash/launcher/launcher_types.h"
 #endif
 
-namespace chrome {
-
 namespace {
 
 bool disable_external_open_for_testing_ = false;
@@ -65,6 +63,12 @@ void ChromeShellWindowDelegate::InitWebContents(
 #endif
 }
 
+apps::NativeAppWindow* ChromeShellWindowDelegate::CreateNativeAppWindow(
+    apps::ShellWindow* window,
+    const apps::ShellWindow::CreateParams& params) {
+  return CreateNativeAppWindowImpl(window, params);
+}
+
 content::WebContents* ChromeShellWindowDelegate::OpenURLFromTab(
     Profile* profile,
     content::WebContents* source,
@@ -148,5 +152,3 @@ bool ChromeShellWindowDelegate::IsWebContentsVisible(
     content::WebContents* web_contents) {
   return platform_util::IsVisible(web_contents->GetView()->GetNativeView());
 }
-
-}  // namespace chrome