author Jan Henning <>
Fri, 11 Jan 2019 21:21:41 +0000
changeset 453568 0355f47af6ceab050018e9c27fc9d9c4bb944662
parent 392145 c995692a3c92e3fc2e31849c25eb8da49afa1326
permissions -rw-r--r--
Bug 1517976 - Test that resetting WindowUtils.isFirstPaint doesn't clobber APZ scroll position. r=botond We need to setup a case where the visual viewport is smaller than the layout viewport. Faking a pinch zoom through touch events is imprecise, whereas calling windowUtils.setResolutionAndScaleTo(value > 1) to simulate the equivalent effect of a pinch-zoom on the page led to the subsequent scroll attempt failing quite often even after calling waitForApzFlushedRepaints(). So instead, we set up a very wide layout viewport through the meta viewport tag, which on Desktop means additionally enabling the dom.meta-viewport.enabled pref. Differential Revision:

# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
# vim: set filetype=python:
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at

with Files("**"):
    BUG_COMPONENT = ("Core", "Memory Allocator")

DIRS += [

# For now, don't build mozalloc when building with --enable-project=memory
if CONFIG['MOZ_BUILD_APP'] != 'memory':
    DIRS += [

    DIRS += ['volatile']

# NB: gtest dir is included in toolkit/ due to its dependency
# on libxul.

    DIRS += ['replace']