[Extensions Bindings] Handle updating context permissions

extensions/renderer/native_extension_bindings_system.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/native_extension_bindings_system.h"
 
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
 #include "content/public/common/console_message_level.h"
 #include "content/public/common/content_switches.h"
@@ skipping 177 matching lines @@
 }
 
 // Returns the API schema indicated by |api_name|.
 const base::DictionaryValue& GetAPISchema(const std::string& api_name) {
   const base::DictionaryValue* schema =
       ExtensionAPI::GetSharedInstance()->GetSchema(api_name);
   CHECK(schema) << api_name;
   return *schema;
 }
 
-// Returns true if the method specified by |method_name| is available to the
-// given |context|.
-bool IsAPIMethodAvailable(ScriptContext* context,
-                          const std::string& method_name) {
-  return context->GetAvailability(method_name).is_available();
+// Returns true if the feature specified by |name| is available to the given
+// |context|.
+bool IsAPIFeatureAvailable(v8::Local<v8::Context> context,
+                           const std::string& name) {
+  ScriptContext* script_context =
+      ScriptContextSet::GetContextByV8Context(context);
+  DCHECK(script_context);
+  return script_context->GetAvailability(name).is_available();
 }
 
 // Instantiates the binding object for the given |name|. |name| must specify a
 // specific feature.
 v8::Local<v8::Object> CreateRootBinding(v8::Local<v8::Context> context,
                                         ScriptContext* script_context,
                                         const std::string& name,
                                         APIBindingsSystem* bindings_system) {
   APIBindingHooks* hooks = nullptr;
-  v8::Local<v8::Object> binding_object = bindings_system->CreateAPIInstance(
-      name, context, base::Bind(&IsAPIMethodAvailable, script_context), &hooks);
+  v8::Local<v8::Object> binding_object =
+      bindings_system->CreateAPIInstance(name, context, &hooks);
 
   gin::Handle<APIBindingBridge> bridge_handle = gin::CreateHandle(
       context->GetIsolate(),
       new APIBindingBridge(hooks, context, binding_object,
                            script_context->GetExtensionID(),
                            script_context->GetContextTypeDescription(),
                            base::Bind(&CallJsFunction)));
   v8::Local<v8::Value> native_api_bridge = bridge_handle.ToV8();
   script_context->module_system()->OnNativeBindingCreated(name,
                                                           native_api_bridge);
@@ skipping 122 matching lines @@
 
 NativeExtensionBindingsSystem::NativeExtensionBindingsSystem(
     const SendRequestIPCMethod& send_request_ipc,
     const SendEventListenerIPCMethod& send_event_listener_ipc)
     : send_request_ipc_(send_request_ipc),
       send_event_listener_ipc_(send_event_listener_ipc),
       api_system_(
           base::Bind(&CallJsFunction),
           base::Bind(&CallJsFunctionSync),
           base::Bind(&GetAPISchema),
+          base::Bind(&IsAPIFeatureAvailable),
           base::Bind(&NativeExtensionBindingsSystem::SendRequest,
                      base::Unretained(this)),
           base::Bind(&NativeExtensionBindingsSystem::OnEventListenerChanged,
                      base::Unretained(this)),
           APILastError(base::Bind(&GetRuntime), base::Bind(&AddConsoleError))),
       weak_factory_(this) {
   api_system_.RegisterCustomType("storage.StorageArea",
                                  base::Bind(&StorageArea::CreateStorageArea));
   api_system_.RegisterCustomType("types.ChromeSetting",
                                  base::Bind(&ChromeSetting::Create));
@@ skipping 319 matching lines @@
     v8::Local<v8::Value>* binding_util_out) {
   gin::Handle<APIBindingJSUtil> handle = gin::CreateHandle(
       context->GetIsolate(),
       new APIBindingJSUtil(
           api_system_.type_reference_map(), api_system_.request_handler(),
           api_system_.event_handler(), base::Bind(&CallJsFunction)));
   *binding_util_out = handle.ToV8();
 }
 
 }  // namespace extensions