extensions: Add ExtensionView interface.

chrome/browser/extensions/extension_view.h

+// Copyright (c) 2012 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 CHROME_BROWSER_EXTENSIONS_EXTENSION_VIEW_H_
+#define CHROME_BROWSER_EXTENSIONS_EXTENSION_VIEW_H_
+
+class Browser;
+
+namespace gfx {
+class Size;
+}
+
+namespace extensions {
+class ExtensionHost;
+}
+
+class ExtensionView {
+ public:
+  static ExtensionView* Create(extensions::ExtensionHost* host,
+                               Browser* browser);
+
+  virtual ~ExtensionView() {}
+
+  virtual Browser* GetBrowser() = 0;
+
+  virtual void ResizeDueToAutoResize(const gfx::Size& new_size) = 0;
+
+  virtual void RenderViewCreated() = 0;
+
+  virtual void DidStopLoading() = 0;
+};
+
+#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_VIEW_H_