Make <webview> use out-of-process iframe architecture.

extensions/renderer/guest_view/guest_view_container.cc

 // Copyright 2014 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 "extensions/renderer/guest_view/guest_view_container.h"
 
 #include "components/guest_view/common/guest_view_constants.h"
 #include "components/guest_view/common/guest_view_messages.h"
 #include "content/public/renderer/render_frame.h"
 #include "content/public/renderer/render_frame_observer.h"
@@ skipping 30 matching lines @@
     GuestViewContainer* container,
     content::RenderFrame* render_frame)
     : content::RenderFrameObserver(render_frame),
       container_(container) {}
 
 void GuestViewContainer::RenderFrameLifetimeObserver::OnDestruct() {
   container_->RenderFrameDestroyed();
 }
 
 GuestViewContainer::GuestViewContainer(content::RenderFrame* render_frame)
-    : element_instance_id_(guest_view::kInstanceIDNone),
-      render_frame_(render_frame),
-      ready_(false) {
+    : ready_(false),
+      element_instance_id_(guest_view::kInstanceIDNone),
+      render_frame_(render_frame) {
   render_frame_lifetime_observer_.reset(
       new RenderFrameLifetimeObserver(this, render_frame_));
 }
 
 GuestViewContainer::~GuestViewContainer() {
   if (element_instance_id() != guest_view::kInstanceIDNone)
     g_guest_view_container_map.Get().erase(element_instance_id());
 
   if (pending_response_.get())
     pending_response_->ExecuteCallbackIfAvailable(0 /* argc */, nullptr);
@@ skipping 77 matching lines @@
 void GuestViewContainer::SetElementInstanceID(int element_instance_id) {
   DCHECK_EQ(element_instance_id_, guest_view::kInstanceIDNone);
   element_instance_id_ = element_instance_id;
 
   DCHECK(!g_guest_view_container_map.Get().count(element_instance_id));
   g_guest_view_container_map.Get().insert(
       std::make_pair(element_instance_id, this));
 }
 
 }  // namespace extensions