Extract minimal RenderViewHost interface for embedders, leaving

chrome/browser/tab_contents/chrome_web_contents_view_gtk_delegate.cc

 // 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.
 
 #include "chrome/browser/tab_contents/chrome_web_contents_view_gtk_delegate.h"
 
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/tab_contents/render_view_context_menu_gtk.h"
 #include "chrome/browser/tab_contents/web_drag_bookmark_handler_gtk.h"
 #include "chrome/browser/ui/gtk/constrained_window_gtk.h"
@@ skipping 94 matching lines @@
   content::RenderWidgetHostView* view = NULL;
   if (params.custom_context.render_widget_id !=
       content::CustomContextMenuContext::kCurrentRenderWidget) {
     IPC::Channel::Listener* listener =
         view_->web_contents()->GetRenderProcessHost()->GetListenerByID(
             params.custom_context.render_widget_id);
     if (!listener) {
       NOTREACHED();
       return;
     }
-    view = RenderWidgetHost::FromIPCChannelListener(listener)->view();
+    view = RenderWidgetHost::FromIPCChannelListener(listener)->GetView();
   } else {
     view = view_->web_contents()->GetRenderWidgetHostView();
   }
 
   context_menu_.reset(
       new RenderViewContextMenuGtk(view_->web_contents(), params, view));
   context_menu_->Init();
 
   gfx::Rect bounds;
   view_->GetContainerBounds(&bounds);
@@ skipping 21 matching lines @@
   g_value_set_int(&value, child_x);
   gtk_container_child_set_property(GTK_CONTAINER(floating_container),
                                    widget, "x", &value);
 
   int child_y = std::max((allocation->height - requisition.height) / 2, 0);
   g_value_set_int(&value, child_y);
   gtk_container_child_set_property(GTK_CONTAINER(floating_container),
                                    widget, "y", &value);
   g_value_unset(&value);
 }