Allow embedders to provide a custom view for popup (select box) widgets,

content/public/browser/web_contents_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 CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 20 matching lines @@
 
   virtual void CreateView(
       const gfx::Size& initial_size, gfx::NativeView context) = 0;
 
   // Sets up the View that holds the rendered web page, receives messages for
   // it and contains page plugins. The host view should be sized to the current
   // size of the WebContents.
   virtual RenderWidgetHostView* CreateViewForWidget(
       RenderWidgetHost* render_widget_host) = 0;
 
+  // Creates a new View that holds a popup and receives messages for it.
+  virtual RenderWidgetHostView* CreateViewForPopupWidget(
+      RenderWidgetHost* render_widget_host) = 0;
+
   // Returns the native widget that contains the contents of the tab.
   virtual gfx::NativeView GetNativeView() const = 0;
 
   // Returns the native widget with the main content of the tab (i.e. the main
   // render view host, though there may be many popups in the tab as children of
   // the container).
   virtual gfx::NativeView GetContentNativeView() const = 0;
 
   // Returns the outermost native view. This will be used as the parent for
   // dialog boxes.
@@ skipping 69 matching lines @@
   // overlapped by another view, notify the view by calling this with |true|
   // before it draws for the first time. After the first draw, do not change
   // this setting.
   virtual void SetAllowOverlappingViews(bool overlapping) = 0;
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_VIEW_H_