Extract NativeAppWindow from src/extensions

components/native_app_window/native_app_window_delegate.h

Index: components/native_app_window/native_app_window_delegate.h
diff --git a/components/native_app_window/native_app_window_delegate.h b/components/native_app_window/native_app_window_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..9a4a268e06613a329e24511442c80af1e4171318
--- /dev/null
+++ b/components/native_app_window/native_app_window_delegate.h
@@ -0,0 +1,48 @@
+// 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 COMPONENTS_NATIVE_APP_WINDOW_NATIVE_APP_WINDOW_DELEGATE_H_
+#define COMPONENTS_NATIVE_APP_WINDOW_NATIVE_APP_WINDOW_DELEGATE_H_
+
+#include "base/strings/string16.h"
+#include "components/native_app_window/app_window_create_params.h"
+
+namespace content {
+class BrowserContext;
+class WebContents;
+}
+
+namespace native_app_window {
+
+class NativeAppWindowDelegate {
+ public:
+  virtual content::WebContents* GetWebContents() = 0;
+  virtual content::BrowserContext* GetBrowserContext() = 0;
+
+  // Call to notify ShellRegistry and delete the window. Subclasses should
+  // invoke this method instead of using "delete this".
+  virtual void OnNativeClose() = 0;
+
+  // Should be called by native implementations when the window size, position,
+  // or minimized/maximized state has changed.
+  virtual void OnNativeWindowChanged() = 0;
+
+  // Should be called by native implementations when the window is activated.
+  virtual void OnNativeWindowActivated() = 0;
+
+  // Whether the app window wants to be alpha enabled.
+  virtual bool RequestedAlphaEnabled() const = 0;
+
+  // NativeAppWindows should call this to determine what the window's title
+  // is on startup and from within UpdateWindowTitle().
+  virtual base::string16 GetTitle() const = 0;
+
+  virtual native_app_window::WindowType GetWindowType() const = 0;
+
+  virtual bool WindowTypeIsPanel() const = 0;
+};
+
+}  // namespace native_app_window
+
+#endif  // COMPONENTS_NATIVE_APP_WINDOW_NATIVE_APP_WINDOW_DELEGATE_H_