Implement <appview> skeleton.

chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.cc

Index: chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.cc
diff --git a/chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.cc b/chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.cc
index 08fbf5bd4a9aaf327b08233f62e29685642ec06e..bed99eb67c3bec043ea5e1b7e96b8a3415e6439f 100644
--- a/chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.cc
+++ b/chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.cc
@@ -235,6 +235,7 @@ void ChromeExtensionsDispatcherDelegate::PopulateSourceMap(
                              IDR_CHROME_DIRECT_SETTING_JS);
 
   // Platform app sources that are not API-specific..
+  source_map->RegisterSource("appView", IDR_APP_VIEW_JS);
   source_map->RegisterSource("tagWatcher", IDR_TAG_WATCHER_JS);
   source_map->RegisterSource("webview", IDR_WEBVIEW_CUSTOM_BINDINGS_JS);
   // Note: webView not webview so that this doesn't interfere with the
@@ -293,6 +294,14 @@ void ChromeExtensionsDispatcherDelegate::RequireAdditionalModules(
       module_system->Require("denyWebView");
     }
   }
+
+  if (context_type == extensions::Feature::BLESSED_EXTENSION_CONTEXT) {
+    if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kEnableAppView) &&
+        extension->permissions_data()->HasAPIPermission(
+            extensions::APIPermission::kAppView)) {
+      module_system->Require("appView");
+    }
+  }
 }
 
 void ChromeExtensionsDispatcherDelegate::OnActiveExtensionsUpdated(