Implement Web Restrictions in WebView.

components/web_restrictions/renderer/web_restrictions_gin_wrapper.cc

-// Copyright 2015 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 "components/web_restrictions/renderer/web_restrictions_gin_wrapper.h"
-
-#include "content/public/renderer/render_frame.h"
-#include "gin/handle.h"
-#include "gin/object_template_builder.h"
-#include "third_party/WebKit/public/web/WebKit.h"
-#include "third_party/WebKit/public/web/WebLocalFrame.h"
-
-namespace web_restrictions {
-
-gin::WrapperInfo WebRestrictionsGinWrapper::kWrapperInfo = {
-    gin::kEmbedderNativeGin};
-
-// static
-void WebRestrictionsGinWrapper::Install(content::RenderFrame* render_frame) {
-  v8::Isolate* isolate = blink::mainThreadIsolate();
-  v8::HandleScope handle_scope(isolate);
-  v8::Local<v8::Context> context =
-      render_frame->GetWebFrame()->mainWorldScriptContext();
-  if (context.IsEmpty())
-    return;
-  v8::Context::Scope context_scope(context);
-  gin::Handle<WebRestrictionsGinWrapper> controller =
-      gin::CreateHandle(isolate, new WebRestrictionsGinWrapper(render_frame));
-  if (controller.IsEmpty())
-    return;
-  v8::Local<v8::Object> global = context->Global();
-  global->Set(gin::StringToV8(isolate, "webRestriction"), controller.ToV8());
-}
-
-WebRestrictionsGinWrapper::WebRestrictionsGinWrapper(
-    content::RenderFrame* render_frame)
-    : content::RenderFrameObserver(render_frame) {}
-
-WebRestrictionsGinWrapper::~WebRestrictionsGinWrapper() {}
-
-bool WebRestrictionsGinWrapper::RequestPermission() {
-  if (!render_frame())
-    return false;
-  render_frame()->GetWebFrame()->reload();
-  return true;
-}
-
-void WebRestrictionsGinWrapper::OnDestruct() {
-  // Do nothing. Overrides version that deletes RenderFrameObserver.
-}
-
-gin::ObjectTemplateBuilder WebRestrictionsGinWrapper::GetObjectTemplateBuilder(
-    v8::Isolate* isolate) {
-  return gin::Wrappable<WebRestrictionsGinWrapper>::GetObjectTemplateBuilder(
-             isolate)
-      .SetMethod("requestPermission",
-                 &WebRestrictionsGinWrapper::RequestPermission);
-}
-
-}  // namespace web_restrictions