Add a Javascript wrapper for InterfaceRegistry.

content/shell/renderer/layout_test/interface_registry_js_wrapper.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 "content/shell/renderer/layout_test/interface_registry_js_wrapper.h"
+
+#include <memory>
+#include <utility>
+
+#include "mojo/edk/js/handle.h"
+#include "services/shell/public/cpp/interface_registry.h"
+
+namespace content {
+
+gin::WrapperInfo InterfaceRegistryJsWrapper::kWrapperInfo = {
+    gin::kEmbedderNativeGin};
+const char InterfaceRegistryJsWrapper::kPerFrameModuleName[] =
+    "content/shell/renderer/layout_test/frame_interface_registry";
+const char InterfaceRegistryJsWrapper::kPerProcessModuleName[] =
+    "content/shell/renderer/layout_test/interface_registry";
+
+InterfaceRegistryJsWrapper::~InterfaceRegistryJsWrapper() = default;
+
+// static
+gin::Handle<InterfaceRegistryJsWrapper> InterfaceRegistryJsWrapper::Create(
+    v8::Isolate* isolate,
+    v8::Handle<v8::Context> context,
+    shell::InterfaceRegistry* interface_registry) {
+  return gin::CreateHandle(
+      isolate, new InterfaceRegistryJsWrapper(
+                   isolate, context, interface_registry->GetWeakPtr()));
+}
+
+gin::ObjectTemplateBuilder InterfaceRegistryJsWrapper::GetObjectTemplateBuilder(
+    v8::Isolate* isolate) {
+  return Wrappable<InterfaceRegistryJsWrapper>::GetObjectTemplateBuilder(
+             isolate)
+      .SetMethod("getLocalInterfaceForTesting",
+                 &InterfaceRegistryJsWrapper::GetLocalInterfaceForTesting);
+}
+
+mojo::Handle InterfaceRegistryJsWrapper::GetLocalInterfaceForTesting(
+    const std::string& interface_name) {
+  mojo::MessagePipe pipe;
+  if (interface_registry_) {
+    shell::InterfaceRegistry::TestApi test_api(interface_registry_.get());
+    test_api.GetLocalInterface(interface_name, std::move(pipe.handle0));
+  }
+  return pipe.handle1.release();
+}
+
+InterfaceRegistryJsWrapper::InterfaceRegistryJsWrapper(
+    v8::Isolate* isolate,
+    v8::Handle<v8::Context> context,
+    base::WeakPtr<shell::InterfaceRegistry> interface_registry)
+    : isolate_(isolate),
+      context_(isolate, context),
+      interface_registry_(interface_registry),
+      weak_factory_(this) {
+  context_.SetWeak(this, &InterfaceRegistryJsWrapper::ClearContext,
+                   v8::WeakCallbackType::kParameter);
+}
+
+// static
+void InterfaceRegistryJsWrapper::ClearContext(
+    const v8::WeakCallbackInfo<InterfaceRegistryJsWrapper>& data) {
+  InterfaceRegistryJsWrapper* registry = data.GetParameter();
+  registry->context_.Reset();
+}
+
+}  // namespace content