Prevented connecting drag drop events to a SwappedOut RenderViewHost in WebContentsViewGtk

content/browser/web_contents/web_contents_view_aura.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 "content/browser/web_contents/web_contents_view_aura.h"
 
 #include "base/auto_reset.h"
 #include "base/metrics/histogram.h"
 #include "base/utf_string_conversions.h"
 #include "content/browser/renderer_host/dip_util.h"
@@ skipping 1262 matching lines @@
   return RenderWidgetHostViewPort::CreateViewForWidget(render_widget_host);
 }
 
 void WebContentsViewAura::SetPageTitle(const string16& title) {
   window_->set_title(title);
 }
 
 void WebContentsViewAura::RenderViewCreated(RenderViewHost* host) {
 }
 
-void WebContentsViewAura::RenderViewSwappedIn(RenderViewHost* host) {
+void WebContentsViewAura::RenderViewSwappedIn(RenderViewHost* new_host,
+                                              RenderViewHost* old_host) {
   if (navigation_overlay_.get() && navigation_overlay_->has_window()) {
     navigation_overlay_->StartObservingView(static_cast<
-        RenderWidgetHostViewAura*>(host->GetView()));
+        RenderWidgetHostViewAura*>(new_host->GetView()));
   }
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // WebContentsViewAura, RenderViewHostDelegateView implementation:
 
 void WebContentsViewAura::ShowContextMenu(
     const ContextMenuParams& params,
     ContextMenuSourceType type) {
   if (delegate_.get())
@@ skipping 334 matching lines @@
       event.location(),
       gfx::Screen::GetScreenFor(GetNativeView())->GetCursorScreenPoint(),
       ConvertAuraEventFlagsToWebInputEventModifiers(event.flags()));
   if (drag_dest_delegate_)
     drag_dest_delegate_->OnDrop();
   current_drop_data_.reset();
   return current_drag_op_;
 }
 
 }  // namespace content