Convert tabs, windows, and extension APIs to feature system.

chrome/renderer/extensions/api_definitions_natives.h

Index: chrome/renderer/extensions/api_definitions_natives.h
diff --git a/chrome/renderer/extensions/api_definitions_natives.h b/chrome/renderer/extensions/api_definitions_natives.h
index 48a9abe874e608a8294d485f5ab17dc9d7abd350..31de4f035ac92ea5365a267c5f48eda9a34e420a 100644
--- a/chrome/renderer/extensions/api_definitions_natives.h
+++ b/chrome/renderer/extensions/api_definitions_natives.h
@@ -23,6 +23,10 @@ class ApiDefinitionsNatives : public ChromeV8Extension {
   // the calling context.
   v8::Handle<v8::Value> GetExtensionAPIDefinition(const v8::Arguments& args);
 
+  // bool IsMemberAllowed(string full_name)
+  // Returns true if the member is allowed for the current context.
+  v8::Handle<v8::Value> IsMemberAllowed(const v8::Arguments& args);
+
   DISALLOW_COPY_AND_ASSIGN(ApiDefinitionsNatives);
 };