Create a new RenderFrameHost per child frame when --site-per-process is enabled.

content/renderer/render_view_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/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/auto_reset.h"
@@ skipping 817 matching lines @@
       enumeration_completion_id_(0),
       load_progress_tracker_(new LoadProgressTracker(this)),
       session_storage_namespace_id_(params->session_storage_namespace_id),
       handling_select_range_(false),
       next_snapshot_id_(0),
       allow_partial_swap_(params->allow_partial_swap),
       context_menu_source_type_(ui::MENU_SOURCE_MOUSE) {
 }
 
 void RenderViewImpl::Initialize(RenderViewImplParams* params) {
-  RenderFrameImpl* main_frame = RenderFrameImpl::Create(
-      this, params->main_frame_routing_id);
-  main_render_frame_.reset(main_frame);
   routing_id_ = params->routing_id;
   surface_id_ = params->surface_id;
   if (params->opener_id != MSG_ROUTING_NONE && params->is_renderer_created)
     opener_id_ = params->opener_id;
 
   // Ensure we start with a valid next_page_id_ from the browser.
   DCHECK_GE(next_page_id_, 0);
 
 #if defined(ENABLE_NOTIFICATIONS)
   notification_provider_ = new NotificationProvider(this);
@@ skipping 44 matching lines @@
   webview()->settings()->setAcceleratedCompositingForFixedPositionEnabled(
       ShouldUseFixedPositionCompositing(device_scale_factor_));
   webview()->settings()->setAcceleratedCompositingForOverflowScrollEnabled(
       ShouldUseAcceleratedCompositingForOverflowScroll(device_scale_factor_));
   webview()->settings()->setAcceleratedCompositingForTransitionEnabled(
       ShouldUseTransitionCompositing(device_scale_factor_));
   webview()->settings()->setAcceleratedCompositingForFixedRootBackgroundEnabled(
       ShouldUseAcceleratedFixedRootBackground(device_scale_factor_));
 
   ApplyWebPreferences(webkit_preferences_, webview());
-  webview()->initializeMainFrame(main_render_frame_.get());
+
+  main_render_frame_.reset(
+      RenderFrameImpl::Create(this, params->main_frame_routing_id));
+  // The main frame WebFrame object is closed by
+  // RenderViewImpl::frameDetached().
+  webview()->setMainFrame(WebFrame::create(main_render_frame_.get()));
 
   if (switches::IsTouchDragDropEnabled())
     webview()->settings()->setTouchDragDropEnabled(true);
 
   if (switches::IsTouchEditingEnabled())
     webview()->settings()->setTouchEditingEnabled(true);
 
   if (!params->frame_name.empty())
     webview()->mainFrame()->setName(params->frame_name);
 
@@ skipping 5588 matching lines @@
   for (size_t i = 0; i < icon_urls.size(); i++) {
     WebURL url = icon_urls[i].iconURL();
     if (!url.isEmpty())
       urls.push_back(FaviconURL(url,
                                 ToFaviconType(icon_urls[i].iconType())));
   }
   SendUpdateFaviconURL(urls);
 }
 
 }  // namespace content