Add a specialized apps::NativeAppWindow for app_shell

apps/shell/browser/shell_shell_window_delegate.h

Index: apps/shell/browser/shell_shell_window_delegate.h
diff --git a/apps/shell/browser/shell_shell_window_delegate.h b/apps/shell/browser/shell_shell_window_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..2be242ee52556dc7ca4a53ebbd084a85e0be71cb
--- /dev/null
+++ b/apps/shell/browser/shell_shell_window_delegate.h
@@ -0,0 +1,57 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef APPS_SHELL_BROWSER_SHELL_SHELL_WINDOW_DELEGATE_H_
+#define APPS_SHELL_BROWSER_SHELL_SHELL_WINDOW_DELEGATE_H_
+
+#include "apps/shell_window.h"
+
+namespace apps {
+
+// The ShellWindow::Delegate for app_shell. Used to create instances of
+// ShellNativeAppWindow. Other functionality is not supported.
+class ShellShellWindowDelegate : public ShellWindow::Delegate {
+ public:
+  ShellShellWindowDelegate();
+  virtual ~ShellShellWindowDelegate();
+
+ private:
+  // ShellWindow::Delegate:
+  virtual void InitWebContents(content::WebContents* web_contents) OVERRIDE;
+  virtual NativeAppWindow* CreateNativeAppWindow(
+      ShellWindow* window,
+      const ShellWindow::CreateParams& params) OVERRIDE;
+  virtual content::WebContents* OpenURLFromTab(
+      content::BrowserContext* context,
+      content::WebContents* source,
+      const content::OpenURLParams& params) OVERRIDE;
+  virtual void AddNewContents(content::BrowserContext* context,
+                              content::WebContents* new_contents,
+                              WindowOpenDisposition disposition,
+                              const gfx::Rect& initial_pos,
+                              bool user_gesture,
+                              bool* was_blocked) OVERRIDE;
+  virtual content::ColorChooser* ShowColorChooser(
+      content::WebContents* web_contents,
+      SkColor initial_color) OVERRIDE;
+  virtual void RunFileChooser(
+      content::WebContents* tab,
+      const content::FileChooserParams& params) OVERRIDE;
+  virtual void RequestMediaAccessPermission(
+      content::WebContents* web_contents,
+      const content::MediaStreamRequest& request,
+      const content::MediaResponseCallback& callback,
+      const extensions::Extension* extension) OVERRIDE;
+  virtual int PreferredIconSize() OVERRIDE;
+  virtual void SetWebContentsBlocked(content::WebContents* web_contents,
+                                     bool blocked) OVERRIDE;
+  virtual bool IsWebContentsVisible(
+      content::WebContents* web_contents) OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(ShellShellWindowDelegate);
+};
+
+}  // namespace apps
+
+#endif  // APPS_SHELL_BROWSER_SHELL_SHELL_WINDOW_DELEGATE_H_