Implement a prototype to render cross-site iframes in a separate process from their parent.

content/browser/plugin_service_impl.cc

Index: content/browser/plugin_service_impl.cc
diff --git a/content/browser/plugin_service_impl.cc b/content/browser/plugin_service_impl.cc
index 2cd2eb16f94dd83f7952e49e1f4fe5ec459f2db5..10ccb475db977f4fa8f6e900621d7b4a9cd44386 100644
--- a/content/browser/plugin_service_impl.cc
+++ b/content/browser/plugin_service_impl.cc
@@ -147,6 +147,21 @@ void PluginServiceImpl::Init() {
 
   RegisterPepperPlugins();
 
+  // Register MIME type to support WebView component.

[Charlie Reis, 2013/01/17 19:44:54]

This needs to be behind the --site-per-process flag.  Don't want this plugin
available on the live web!

[nasko, 2013/01/17 22:19:13]

Done.

+  // TODO(irobert): WebView refused to load the WebUI object such as
+  // 'chrome://extensions/' because it violates the Content Security Policy.

[Charlie Reis, 2013/01/17 19:44:54]

We can remove this TODO.

[nasko, 2013/01/17 22:19:13]

Done.

+  webkit::WebPluginInfo webview_plugin(
+      ASCIIToUTF16("WebView Tag"),
+      FilePath(FILE_PATH_LITERAL("")),
+      ASCIIToUTF16("1.2.3.4"),
+      ASCIIToUTF16("Browser Plugin."));
+  webview_plugin.type = webkit::WebPluginInfo::PLUGIN_TYPE_NPAPI;
+  webkit::WebPluginMimeType webview_plugin_mime_type;
+  webview_plugin_mime_type.mime_type = "application/browser-plugin";
+  webview_plugin_mime_type.file_extensions.push_back("*");
+  webview_plugin.mime_types.push_back(webview_plugin_mime_type);
+  RegisterInternalPlugin(webview_plugin, true);
+
   GetContentClient()->AddNPAPIPlugins(plugin_list_);
 
   // Load any specified on the command line as well.