Pull the file picker code out of TabContents.

chrome/browser/ui/tab_contents/tab_contents_wrapper.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_UI_TAB_CONTENTS_TAB_CONTENTS_WRAPPER_H_
 #define CHROME_BROWSER_UI_TAB_CONTENTS_TAB_CONTENTS_WRAPPER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/scoped_ptr.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/browser/tab_contents/tab_contents_observer.h"
 #include "content/common/notification_registrar.h"
 
 namespace prerender {
 class PrerenderObserver;
 }
 
 class Extension;
+class FileSelectObserver;
 class FindTabHelper;
 class NavigationController;
 class PasswordManager;
 class PasswordManagerDelegate;
 class SearchEngineTabHelper;
 class TabContentsWrapperDelegate;
 
 // Wraps TabContents and all of its supporting objects in order to control
 // their ownership and lifetime, while allowing TabContents to remain generic
 // and re-usable in other projects.
@@ skipping 96 matching lines @@
 
   // Registers and unregisters us for notifications.
   NotificationRegistrar registrar_;
 
   // Data for current page -----------------------------------------------------
 
   // Whether the current URL is starred.
   bool is_starred_;
 
   // Tab Helpers ---------------------------------------------------------------
+  // (These provide API for callers and have a getter function listed in the
+  // "Tab Helpers" section in the member functions area, above.)
 
   scoped_ptr<FindTabHelper> find_tab_helper_;
 
   // PasswordManager and its delegate. The delegate must outlive the manager,
   // per documentation in password_manager.h.
   scoped_ptr<PasswordManagerDelegate> password_manager_delegate_;
   scoped_ptr<PasswordManager> password_manager_;
 
+  scoped_ptr<SearchEngineTabHelper> search_engine_tab_helper_;
+
+  // Per-tab observers ---------------------------------------------------------
+  // (These provide no API for callers; objects that need to exist 1:1 with tabs
+  // and silently do their thing live here.)
+
+  scoped_ptr<FileSelectObserver> file_select_observer_;
   scoped_ptr<prerender::PrerenderObserver> prerender_observer_;
 
-  scoped_ptr<SearchEngineTabHelper> search_engine_tab_helper_;
-
   // TabContents (MUST BE LAST) ------------------------------------------------
 
   // The supporting objects need to outlive the TabContents dtor (as they may
   // be called upon during its execution). As a result, this must come last
   // in the list.
   scoped_ptr<TabContents> tab_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContentsWrapper);
 };
 
 #endif  // CHROME_BROWSER_UI_TAB_CONTENTS_TAB_CONTENTS_WRAPPER_H_