Destroy the old RenderWidgetHostView when swapping out a main frame.

content/browser/web_contents/web_contents_impl.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_impl.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <utility>
@@ skipping 4895 matching lines @@
 }
 
 bool WebContentsImpl::CreateRenderViewForRenderManager(
     RenderViewHost* render_view_host,
     int opener_frame_routing_id,
     int proxy_routing_id,
     const FrameReplicationState& replicated_frame_state) {
   TRACE_EVENT0("browser,navigation",
                "WebContentsImpl::CreateRenderViewForRenderManager");
 
-  if (proxy_routing_id == MSG_ROUTING_NONE)
+  RenderViewHostImpl* rvhi = static_cast<RenderViewHostImpl*>(render_view_host);
+
+  // We only create a RWHV for active RenderViewHosts. When an inactive RVH is
+  // reused, the RWHV is created in RenderFrameHostManager::CommitPending.
+  if (rvhi->is_active()) {
+    DCHECK_EQ(MSG_ROUTING_NONE, proxy_routing_id);
     CreateRenderWidgetHostViewForRenderManager(render_view_host);
+  }
 
-  if (!static_cast<RenderViewHostImpl*>(render_view_host)
-           ->CreateRenderView(opener_frame_routing_id,
-                              proxy_routing_id,
-                              replicated_frame_state,
-                              created_with_opener_)) {
+  if (!rvhi->CreateRenderView(opener_frame_routing_id, proxy_routing_id,
+                              replicated_frame_state, created_with_opener_)) {
     return false;
   }
 
   SetHistoryOffsetAndLengthForView(render_view_host,
                                    controller_.GetLastCommittedEntryIndex(),
                                    controller_.GetEntryCount());
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
   // Force a ViewMsg_Resize to be sent, needed to make plugins show up on
   // linux. See crbug.com/83941.
@@ skipping 347 matching lines @@
   dialog_manager_ = dialog_manager;
 }
 
 void WebContentsImpl::RemoveBindingSet(const std::string& interface_name) {
   auto it = binding_sets_.find(interface_name);
   if (it != binding_sets_.end())
     binding_sets_.erase(it);
 }
 
 }  // namespace content