Reintroduce plumbing for user gesture into permission system.

content/shell/browser/shell_permission_manager.cc

Index: content/shell/browser/shell_permission_manager.cc
diff --git a/content/shell/browser/shell_permission_manager.cc b/content/shell/browser/shell_permission_manager.cc
index 6283a7b032680d0af7fa0f6beebb16aaf594fea5..fc0bacb0fc8d22e343ab9ee5f149aad955467e4d 100644
--- a/content/shell/browser/shell_permission_manager.cc
+++ b/content/shell/browser/shell_permission_manager.cc
@@ -32,6 +32,7 @@ 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
@@ -43,6 +44,7 @@ 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());