Change WebContentsDelegate::RunFileChooser to be frame based.

extensions/browser/app_window/app_window.cc

 // 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.
 
 #include "extensions/browser/app_window/app_window.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 909 matching lines @@
   return true;
 }
 
 content::ColorChooser* AppWindow::OpenColorChooser(
     WebContents* web_contents,
     SkColor initial_color,
     const std::vector<content::ColorSuggestion>& suggestions) {
   return app_delegate_->ShowColorChooser(web_contents, initial_color);
 }
 
-void AppWindow::RunFileChooser(WebContents* tab,
+void AppWindow::RunFileChooser(content::RenderFrameHost* render_frame_host,
                                const content::FileChooserParams& params) {
   if (window_type_is_panel()) {
     // Panels can't host a file dialog, abort. TODO(stevenjb): allow file
     // dialogs to be unhosted but still close with the owning web contents.
     // crbug.com/172502.
     LOG(WARNING) << "File dialog opened by panel.";
     return;
   }
 
-  app_delegate_->RunFileChooser(tab, params);
+  app_delegate_->RunFileChooser(render_frame_host, params);
 }
 
 bool AppWindow::IsPopupOrPanel(const WebContents* source) const { return true; }
 
 void AppWindow::MoveContents(WebContents* source, const gfx::Rect& pos) {
   native_app_window_->SetBounds(pos);
 }
 
 void AppWindow::NavigationStateChanged(content::WebContents* source,
                                        content::InvalidateTypes changed_flags) {
@@ skipping 174 matching lines @@
         region.bounds.x(),
         region.bounds.y(),
         region.bounds.right(),
         region.bounds.bottom(),
         region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
   }
   return sk_region;
 }
 
 }  // namespace extensions