Document licenses in Qt WebEngine

Document the licenses users of Qt WebEngine have to
accept. qtwebengine-3rdparty.qdoc is generated using
licenses.py:

cd src/3rdparty; python chromium/tools/licenses.py  --file-template ../../tools/about_credits.tmpl --entry-template ../../tools/about_credits_entry.tmpl credits >../../src/webengine/doc/src/qtwebengine-3rdparty.qdoc

Task-number: QTBUG-51812
Change-Id: I568cf592054adb29dad07d43f3685c78cf7b8196
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Topi Reiniö <topi.reinio@theqtcompany.com>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

src/webengine/doc/src/qtwebengine-index.qdoc

@@ -47,6 +47,7 @@
     \list
         \li \l{Qt WebEngine Overview}
         \li \l{Qt WebEngine Platform Notes}
+        \li \l{Qt WebEngine Licensing}
         \li \l{Qt WebEngine Debugging and Profiling}
         \li \l{Porting from Qt WebKit to Qt WebEngine}
     \endlist

src/webengine/doc/src/qtwebengine-overview.qdoc

@@ -249,49 +249,4 @@
     On Windows, QtWebEngineProcess.exe is located in the bin directory of your Qt application.
 
     For more information on deploying Qt applications, please see \l {Deploying Qt Applications}.
-
-    \section1 License Information
-
-    Qt WebEngine module is a snapshot of the integration of Chromium into Qt.
-
-    Qt Commercial Edition licensees that wish to distribute applications that
-    use the Qt WebEngine module need to be aware of their obligations under the
-    GNU Library General Public License (LGPLv2).
-
-    Developers using the Open Source Edition can choose to redistribute
-    the module under the GNU LGPLv3 or GPLv2 and up.
-
-    \legalese
-
-    Chromium is licensed under the following license:
-
-    Copyright (c) 2013 The Chromium Authors. All rights reserved.
-
-    Redistribution and use in source and binary forms, with or without
-    modification, are permitted provided that the following conditions are
-    met:
-
-    * Redistributions of source code must retain the above copyright
-      notice, this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above
-      copyright notice, this list of conditions and the following disclaimer
-      in the documentation and/or other materials provided with the
-      distribution.
-    * Neither the name of Google Inc. nor the names of its
-    contributors may be used to endorse or promote products derived from
-    this software without specific prior written permission.
-
-    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-    \endlegalese
 */

src/webengine/doc/src/qwebengine-licensing.qdoc

+/*!
+\contentspage qtwebengine-licensing.html
+\group qtwebengine-licensing
+\title Qt WebEngine Licensing
+
+The Qt specific parts of the Qt WebEngine module are dual-licensed
+under Commercial and GNU Lesser General Public License (LGPLv3).
+In addition, the module contains code licensed under LGPLv2.
+
+The module includes a snapshot of Chromium. As such, users need to
+respect the licenses of Chromium, and third-party code included in
+Chromium. The arguably most restrictive license to be respected by
+all users is LGPLv2.1.
+
+Third party licenses included in the sources are:
+*/
+
+/*!
+\contentspage qtwebengine-licensing.html
+\page qtwebengine-3rdparty-chromium-global.html
+\ingroup qtwebengine-licensing
+\title Chromium License
+\brief BSD
+
+The Google-authored portion of Chromium is released under a BSD license:
+
+\quotefile ../../../3rdparty/chromium/LICENSE
+*/

tools/about_credits.tmpl

+{{entries}}

tools/about_credits_entry.tmpl

+/*!
+\contentspage qtwebengine-licensing.html
+\page qtwebengine-3rdparty-{{name-sanitized}}.html
+\ingroup qtwebengine-licensing
+\brief {{license-type}}
+\title {{name}}
+
+\l{{{url}}}{Project Homepage}
+
+\badcode
+{{license}}
+\endcode
+*/