Reintroduce plumbing for user gesture into permission system.

chrome/browser/permissions/permission_context_base.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 CHROME_BROWSER_PERMISSIONS_PERMISSION_CONTEXT_BASE_H_
 #define CHROME_BROWSER_PERMISSIONS_PERMISSION_CONTEXT_BASE_H_
 
 #include <memory>
 
 #include "base/callback.h"
@@ skipping 61 matching lines @@
   // This is public so permissions that don't yet inherit from
   // PermissionContextBase can use it.
   static const char kPermissionsKillSwitchBlockedValue[];
 
   // The renderer is requesting permission to push messages.
   // When the answer to a permission request has been determined, |callback|
   // should be called with the result.
   virtual void RequestPermission(content::WebContents* web_contents,
                                  const PermissionRequestID& id,
                                  const GURL& requesting_frame,
+                                 bool user_gesture,
                                  const BrowserPermissionCallback& callback);
 
   // Returns whether the permission has been granted, denied...
   virtual ContentSetting GetPermissionStatus(
       const GURL& requesting_origin,
       const GURL& embedding_origin) const;
 
   // Resets the permission to its default value.
   virtual void ResetPermission(const GURL& requesting_origin,
                                const GURL& embedding_origin);
 
   // Withdraw an existing permission request, no op if the permission request
   // was already cancelled by some other means.
   virtual void CancelPermissionRequest(content::WebContents* web_contents,
                                        const PermissionRequestID& id);
 
   // Whether the kill switch has been enabled for this permission.
   // public for permissions that do not use RequestPermission, like
   // camera and microphone, and for testing.
   bool IsPermissionKillSwitchOn() const;
 
  protected:
   // Decide whether the permission should be granted.
   // Calls PermissionDecided if permission can be decided non-interactively,
   // or NotifyPermissionSet if permission decided by presenting an infobar.
   virtual void DecidePermission(content::WebContents* web_contents,
                                 const PermissionRequestID& id,
                                 const GURL& requesting_origin,
                                 const GURL& embedding_origin,
+                                bool user_gesture,
                                 const BrowserPermissionCallback& callback);
 
   // Called when permission is granted without interactively asking the user.
   void PermissionDecided(const PermissionRequestID& id,
                          const GURL& requesting_origin,
                          const GURL& embedding_origin,
                          const BrowserPermissionCallback& callback,
                          bool persist,
                          ContentSetting content_setting);
 
@@ skipping 45 matching lines @@
 #endif
   base::ScopedPtrHashMap<std::string, std::unique_ptr<PermissionBubbleRequest>>
       pending_bubbles_;
 
   // Must be the last member, to ensure that it will be
   // destroyed first, which will invalidate weak pointers
   base::WeakPtrFactory<PermissionContextBase> weak_factory_;
 };
 
 #endif  // CHROME_BROWSER_PERMISSIONS_PERMISSION_CONTEXT_BASE_H_