<webview>, <appview> and <extensionoptions> can run in a detached state.

extensions/browser/guest_view/web_view/web_view_guest.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/browser/guest_view/web_view/web_view_guest.h"
 
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/public/browser/browser_context.h"
@@ skipping 198 matching lines @@
 
 // static
 int WebViewGuest::GetViewInstanceId(WebContents* contents) {
   auto guest = FromWebContents(contents);
   if (!guest)
     return guestview::kInstanceIDNone;
 
   return guest->view_instance_id();
 }
 
-const char* WebViewGuest::GetAPINamespace() const {
-  return webview::kAPINamespace;
-}
-
-int WebViewGuest::GetTaskPrefix() const {
-  return IDS_EXTENSION_TASK_MANAGER_WEBVIEW_TAG_PREFIX;
+bool WebViewGuest::CanRunInDetachedState() const {
+  return true;
 }
 
 void WebViewGuest::CreateWebContents(
     const base::DictionaryValue& create_params,
     const WebContentsCreatedCallback& callback) {
   content::RenderProcessHost* owner_render_process_host =
       owner_web_contents()->GetRenderProcessHost();
   std::string storage_partition_id;
   bool persist_storage = false;
   ParsePartitionParam(create_params, &storage_partition_id, &persist_storage);
@@ skipping 61 matching lines @@
 
   rules_registry_id_ = GetOrGenerateRulesRegistryID(
       owner_web_contents()->GetRenderProcessHost()->GetID(),
       view_instance_id());
 
   // We must install the mapping from guests to WebViews prior to resuming
   // suspended resource loads so that the WebRequest API will catch resource
   // requests.
   PushWebViewStateToIOThread();
 
-  // TODO(fsamuel): Once <webview> can run in a detached state, call
-  // ApplyAttributes here.
+  ApplyAttributes(create_params);
 }
 
 void WebViewGuest::AttachWebViewHelpers(WebContents* contents) {
   if (web_view_guest_delegate_)
     web_view_guest_delegate_->OnAttachWebViewHelpers(contents);
   web_view_permission_helper_.reset(new WebViewPermissionHelper(this));
 }
 
 void WebViewGuest::DidStopLoading() {
   scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
@@ skipping 13 matching lines @@
       content::BrowserThread::IO,
       FROM_HERE,
       base::Bind(
           &RemoveWebViewEventListenersOnIOThread,
           browser_context(),
           owner_extension_id(),
           owner_web_contents()->GetRenderProcessHost()->GetID(),
           view_instance_id()));
 }
 
+const char* WebViewGuest::GetAPINamespace() const {
+  return webview::kAPINamespace;
+}
+
+int WebViewGuest::GetTaskPrefix() const {
+  return IDS_EXTENSION_TASK_MANAGER_WEBVIEW_TAG_PREFIX;
+}
+
 void WebViewGuest::GuestDestroyed() {
   // Clean up custom context menu items for this guest.
   if (web_view_guest_delegate_)
     web_view_guest_delegate_->OnGuestDestroyed();
   RemoveWebViewStateFromIOThread(web_contents());
 }
 
 void WebViewGuest::GuestReady() {
   // The guest RenderView should always live in an isolated guest process.
   CHECK(web_contents()->GetRenderProcessHost()->IsIsolatedGuest());
@@ skipping 123 matching lines @@
                                       const std::string& name) {
   if (!is_top_level)
     return;
 
   if (name_ == name)
     return;
 
   ReportFrameNameChange(name);
 }
 
-bool WebViewGuest::CanRunInDetachedState() const {
-  return false;
-}
-
 void WebViewGuest::CreateNewGuestWebViewWindow(
     const content::OpenURLParams& params) {
   GuestViewManager* guest_manager =
       GuestViewManager::FromBrowserContext(browser_context());
   // Set the attach params to use the same partition as the opener.
   // We pull the partition information from the site's URL, which is of the
   // form guest://site/{persist}?{partition_name}.
   const GURL& site_url = web_contents()->GetSiteInstance()->GetSiteURL();
   const std::string storage_partition_id =
       GetStoragePartitionIdFromSiteURL(site_url);
@@ skipping 738 matching lines @@
       WebViewGuest::From(owner_web_contents()->GetRenderProcessHost()->GetID(),
                          new_window_instance_id);
   if (!guest)
     return;
 
   if (!allow)
     guest->Destroy();
 }
 
 }  // namespace extensions