Add checks for Feature Policy to the mojo Permission Service

content/browser/permissions/permission_service_context.h

 // 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.
 
 #ifndef CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_CONTEXT_H_
 #define CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_CONTEXT_H_
 
 #include "base/macros.h"
+#include "content/common/content_export.h"
 #include "content/public/browser/permission_type.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "mojo/public/cpp/bindings/strong_binding_set.h"
 #include "third_party/WebKit/public/platform/modules/permissions/permission.mojom.h"
 
 namespace service_manager {
 struct BindSourceInfo;
 }
 
 namespace url {
 class Origin;
 }
 
 namespace content {
 
 class RenderFrameHost;
 class RenderProcessHost;
 
 // Provides information to a PermissionService. It is used by the
 // PermissionServiceImpl to handle request permission UI.
 // There is one PermissionServiceContext per RenderFrameHost/RenderProcessHost
 // which owns it. It then owns all PermissionServiceImpl associated to their
 // owner.
-class PermissionServiceContext : public WebContentsObserver {
+class CONTENT_EXPORT PermissionServiceContext : public WebContentsObserver {
  public:
   explicit PermissionServiceContext(RenderFrameHost* render_frame_host);
   explicit PermissionServiceContext(RenderProcessHost* render_process_host);
   ~PermissionServiceContext() override;
 
   void CreateService(const service_manager::BindSourceInfo& source_info,
                      blink::mojom::PermissionServiceRequest request);
 
   void CreateSubscription(PermissionType permission_type,
                           const url::Origin& origin,
@@ skipping 23 matching lines @@
   mojo::StrongBindingSet<blink::mojom::PermissionService> services_;
   std::unordered_map<int, std::unique_ptr<PermissionSubscription>>
       subscriptions_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionServiceContext);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_CONTEXT_H_