Implement HasPermission() method in PermissionService.

content/browser/permissions/permission_service_context.cc

 // Copyright 2014 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/browser/permissions/permission_service_context.h"
 
 #include "content/browser/permissions/permission_service_impl.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/render_frame_host.h"
+#include "content/public/browser/render_process_host.h"
 #include "content/public/browser/web_contents.h"
 
 namespace content {
 
 PermissionServiceContext::PermissionServiceContext(
     RenderFrameHost* render_frame_host)
     : WebContentsObserver(WebContents::FromRenderFrameHost(render_frame_host)),
-      render_frame_host_(render_frame_host) {
+      render_frame_host_(render_frame_host),
+      render_process_host_(nullptr) {
+}
+
+PermissionServiceContext::PermissionServiceContext(
+    RenderProcessHost* render_process_host)
+    : WebContentsObserver(nullptr),
+      render_frame_host_(nullptr),
+      render_process_host_(render_process_host) {
 }
 
 PermissionServiceContext::~PermissionServiceContext() {
 }
 
 void PermissionServiceContext::CreateService(
     mojo::InterfaceRequest<PermissionService> request) {
   PermissionServiceImpl* service =
       new PermissionServiceImpl(this);
 
@@ skipping 25 matching lines @@
 
 void PermissionServiceContext::CancelPendingRequests(
     RenderFrameHost* render_frame_host) const {
   if (render_frame_host != render_frame_host_)
     return;
 
   for (auto* service : services_)
     service->CancelPendingRequests();
 }
 
+BrowserContext* PermissionServiceContext::GetBrowserContext() const {
+  if (!web_contents()) {
+    DCHECK(render_process_host_);
+    return render_process_host_->GetBrowserContext();
+  }
+  return web_contents()->GetBrowserContext();
+}
+
+GURL PermissionServiceContext::GetEmbeddingOrigin() const {
+  return web_contents() ? web_contents()->GetLastCommittedURL().GetOrigin()
+                        : GURL();
+}
+
 } // namespace content