Reintroduce plumbing for user gesture into permission system.

content/shell/browser/shell_permission_manager.cc

 // 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.
 
 #include "content/shell/browser/shell_permission_manager.h"
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "content/public/browser/permission_type.h"
 #include "content/public/common/content_switches.h"
@@ skipping 14 matching lines @@
     : PermissionManager() {
 }
 
 ShellPermissionManager::~ShellPermissionManager() {
 }
 
 int ShellPermissionManager::RequestPermission(
     PermissionType permission,
     RenderFrameHost* render_frame_host,
     const GURL& requesting_origin,
+    bool user_gesture,
     const base::Callback<void(blink::mojom::PermissionStatus)>& callback) {
   callback.Run(IsWhitelistedPermissionType(permission)
                    ? blink::mojom::PermissionStatus::GRANTED
                    : blink::mojom::PermissionStatus::DENIED);
   return kNoPendingOperation;
 }
 
 int ShellPermissionManager::RequestPermissions(
     const std::vector<PermissionType>& permissions,
     content::RenderFrameHost* render_frame_host,
     const GURL& requesting_origin,
+    bool user_gesture,
     const base::Callback<
         void(const std::vector<blink::mojom::PermissionStatus>&)>& callback) {
   std::vector<blink::mojom::PermissionStatus> result(permissions.size());
   for (const auto& permission : permissions) {
     result.push_back(IsWhitelistedPermissionType(permission)
                          ? blink::mojom::PermissionStatus::GRANTED
                          : blink::mojom::PermissionStatus::DENIED);
   }
   callback.Run(result);
   return kNoPendingOperation;
@@ skipping 40 matching lines @@
     const GURL& embedding_origin,
     const base::Callback<void(blink::mojom::PermissionStatus)>& callback) {
   return kNoPendingOperation;
 }
 
 void ShellPermissionManager::UnsubscribePermissionStatusChange(
     int subscription_id) {
 }
 
 }  // namespace content