Implement RunFileChooser for ExtensionHost, so that file input elements work in

chrome/browser/extensions/extension_host.h

 // Copyright (c) 2011 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_HOST_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_HOST_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 106 matching lines @@
 
   // TabContentsDelegate
   virtual bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
                                       bool* is_keyboard_shortcut) OVERRIDE;
   virtual void HandleKeyboardEvent(const NativeWebKeyboardEvent& event)
       OVERRIDE;
   virtual void UpdatePreferredSize(TabContents* source,
                                    const gfx::Size& pref_size) OVERRIDE;
   virtual content::JavaScriptDialogCreator* GetJavaScriptDialogCreator()
       OVERRIDE;
+  virtual void RunFileChooser(
+      TabContents* tab, const content::FileChooserParams& params) OVERRIDE;
   virtual void AddNewContents(TabContents* source,
                               TabContents* new_contents,
                               WindowOpenDisposition disposition,
                               const gfx::Rect& initial_pos,
                               bool user_gesture) OVERRIDE;
   virtual void CloseContents(TabContents* contents) OVERRIDE;
 
   // content::NotificationObserver
   virtual void Observe(int type,
                        const content::NotificationSource& source,
@@ skipping 77 matching lines @@
   // The relevant TabContents associated with this ExtensionHost, if any.
   TabContents* associated_tab_contents_;
 
   // Used to measure how long it's been since the host was created.
   PerfTimer since_created_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionHost);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_HOST_H_