Refactoring: de-couple Extensions from "script injection System" [render side] : 1

extensions/renderer/injection_host.h

+// 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.
+
+#ifndef EXTENSIONS_RENDERER_INJECTION_HOST_H
+#define EXTENSIONS_RENDERER_INJECTION_HOST_H
+
+#include "extensions/common/host_id.h"
+#include "extensions/common/permissions/permissions_data.h"
+#include "url/gurl.h"
+
+// An interface for all kinds of hosts who own user scripts.
+class InjectionHost {
+ public:
+  InjectionHost(const HostID& host_id);
+  virtual ~InjectionHost();
+
+  virtual const std::string& GetContentSecurityPolicy() const = 0;
+
+  // The base url for the host.
+  virtual const GURL& url() const = 0;
+
+  // The human-readable name of the host.
+  virtual const std::string& name() const = 0;
+
+  // Returns true if the script should execute.
+  virtual extensions::PermissionsData::AccessType CanExecuteOnFrame(
+      const GURL& document_url,
+      const GURL& top_frame_url,
+      int tab_id,
+      bool is_declarative) const = 0;
+
+  const HostID& id() const { return id_; }
+ private:
+  // The ID of the host.
+  HostID id_;
+
+  DISALLOW_COPY_AND_ASSIGN(InjectionHost);
+};
+
+#endif  // EXTENSIONS_RENDERER_INJECTION_HOST_H