Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.

Change-Id: Ieb6bac7a1be5c25eb7cb917495b58b6a870ca6d4
Reviewed-by: Pierre Rossi <pierre.rossi@theqtcompany.com>

Promote WebEngineDownloadItem and WebEngine singleton to
public API and add DownloadView to the browser example.
This patch also adds profile support and webengine settings
to quicknanobrowser.

Change-Id: Ie81fb330e640fad7feec667a8af3afe67050693f
Reviewed-by: Michael Brüning <michael.bruning@theqtcompany.com>

Rename the download signal to downloadRequested and only start a
download if it has been explicitly accepted by the user, else cancel
it by default.
Replace the downloadPercentage property with totalBytes and receivedBytes
to also give the user information about download size.
Additionally this patch adds missing documentation.

Change-Id: I9d895386cf033f2efffe3ebac6f08f94c6fe0c19
Reviewed-by: Michael Brüning <michael.bruning@theqtcompany.com>
Reviewed-by: Jocelyn Turcotte <jturcotte@woboq.com>

Also revert the experimental version number to 1.0 in the import.

Change-Id: I7641110f296c432801808a4217c94a6d9cc2a540
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>

This patch exposes downloadStarted and downloadFinished
signals on the WebEngineProfile to notify about downloads.
The WebEngineDownloadItem exposes a subset of Chromium's
content::DownloadItem functionality.
For now we expose minimal requirements to be able to control
downloads in QML but this can be extended in the future.
This patch also adds a DownloadView to quicktestbrowser
to demonstrate the usage of the new API.

[ChangeLog][QtWebEngineQML] Add QtQuick download API

Change-Id: I8d8f0daf02c4e0151000427fc2a4b37d28b9db52
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>