[Extensions] Adjust script injection reporting to the browser side

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"
@@ skipping 12 matching lines @@
   // 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;
 
+  // Returns true if the browser should be notified of any injections the host
+  // performs.
+  virtual bool ShouldNotifyBrowserOfInjection() 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