Reintroduce plumbing for user gesture into permission system.

chrome/browser/media/protected_media_identifier_permission_context.h

 // Copyright 2013 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 CHROME_BROWSER_MEDIA_PROTECTED_MEDIA_IDENTIFIER_PERMISSION_CONTEXT_H_
 #define CHROME_BROWSER_MEDIA_PROTECTED_MEDIA_IDENTIFIER_PERMISSION_CONTEXT_H_
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/browser/permissions/permission_context_base.h"
@@ skipping 29 matching lines @@
  public:
   explicit ProtectedMediaIdentifierPermissionContext(Profile* profile);
   ~ProtectedMediaIdentifierPermissionContext() override;
 
   // PermissionContextBase implementation.
 #if defined(OS_CHROMEOS)
   void DecidePermission(content::WebContents* web_contents,
                         const PermissionRequestID& id,
                         const GURL& requesting_origin,
                         const GURL& embedding_origin,
+                        bool user_gesture,
                         const BrowserPermissionCallback& callback) override;
 #endif  // defined(OS_CHROMEOS)
   ContentSetting GetPermissionStatus(
       const GURL& requesting_origin,
       const GURL& embedding_origin) const override;
   void CancelPermissionRequest(content::WebContents* web_contents,
                                const PermissionRequestID& id) override;
 
  private:
   void UpdateTabContext(const PermissionRequestID& id,
@@ skipping 27 matching lines @@
 
   // Must be the last member, to ensure that it will be
   // destroyed first, which will invalidate weak pointers
   base::WeakPtrFactory<ProtectedMediaIdentifierPermissionContext> weak_factory_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ProtectedMediaIdentifierPermissionContext);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_PROTECTED_MEDIA_IDENTIFIER_PERMISSION_CONTEXT_H_