[Extensions Bindings] Apply per-context restrictions to events

extensions/renderer/api_binding.cc

 // Copyright 2016 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/renderer/api_binding.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 293 matching lines @@
   // TODO(devlin): enums should always be exposed, but there may be events that
   // are restricted. Investigate.
   for (const auto& key_value : methods_) {
     if (!is_available.Run(key_value.second->full_name)) {
       v8::Maybe<bool> success = object->Delete(
           context, gin::StringToSymbol(isolate, key_value.first));
       CHECK(success.IsJust());
       CHECK(success.FromJust());
     }
   }
+  for (const auto& event : events_) {
+    if (!is_available.Run(event->full_name)) {
+      v8::Maybe<bool> success = object->Delete(
+          context, gin::StringToSymbol(isolate, event->exposed_name));
+      CHECK(success.IsJust());
+      CHECK(success.FromJust());
+    }
+  }
 
   return object;
 }
 
 void APIBinding::InitializeTemplate(v8::Isolate* isolate) {
   DCHECK(object_template_.IsEmpty());
   v8::Local<v8::ObjectTemplate> object_template =
       v8::ObjectTemplate::New(isolate);
 
   for (const auto& key_value : methods_) {
@@ skipping 236 matching lines @@
     arguments->ThrowTypeError("Invalid invocation");
     return;
   }
 
   request_handler_->StartRequest(context, name, std::move(converted_arguments),
                                  callback, custom_callback,
                                  binding::RequestThread::UI);
 }
 
 }  // namespace extensions