Refactor guest view availability to be API not permission based.

chrome/browser/guest_view/extension_options/extension_options_guest.cc

Index: chrome/browser/guest_view/extension_options/extension_options_guest.cc
diff --git a/chrome/browser/guest_view/extension_options/extension_options_guest.cc b/chrome/browser/guest_view/extension_options/extension_options_guest.cc
index d4b3e8b589fb75546cf57c1631ed5944ffdafed8..c844a025ef2cddf87f99c9eeb339795a3c4bc81c 100644
--- a/chrome/browser/guest_view/extension_options/extension_options_guest.cc
+++ b/chrome/browser/guest_view/extension_options/extension_options_guest.cc
@@ -36,16 +36,8 @@ ExtensionOptionsGuest::ExtensionOptionsGuest(
 ExtensionOptionsGuest::~ExtensionOptionsGuest() {
 }
 
-bool ExtensionOptionsGuest::CanEmbedderUseGuestView(
-    const std::string& embedder_extension_id) {
-  const extensions::Extension* embedder_extension =
-      extensions::ExtensionRegistry::Get(browser_context())
-          ->enabled_extensions()
-          .GetByID(embedder_extension_id);
-  if (!embedder_extension)
-    return false;
-  return embedder_extension->permissions_data()->HasAPIPermission(
-      extensions::APIPermission::kEmbeddedExtensionOptions);
+const char* ExtensionOptionsGuest::GetAPINamespace() {
+  return extensionoptions::kApiNamespace;

[Fady Samuel, 2014/08/08 14:55:18]

nit: rename constant to kEmbedderAPINamespace for consistency?

[not at google - send to devlin, 2014/08/08 15:25:25]

Done.

 }
 
 // static