Fix FTBFS with Qt 5.7

qt5-qtwebengine.spec

@@ -113,6 +113,8 @@ Patch11: qtwebengine-opensource-src-5.9.0-skia-neon.patch
 Patch12: qtwebengine-opensource-src-5.9.0-webrtc-neon-detect.patch
 # Force verbose output from the GN bootstrap process
 Patch21: qtwebengine-opensource-src-5.9.0-gn-bootstrap-verbose.patch
+# Fix FTBFS with Qt 5.7
+Patch22: qtwebengine-opensource-src-5.9.2-qt57.patch
 
 %if 0%{?fedora} && 0%{?fedora} < 25
 # work around missing qt5_qtwebengine_arches macro on F24
@@ -358,6 +360,7 @@ BuildArch: noarch
 %patch11 -p1 -b .skia-neon
 %patch12 -p1 -b .webrtc-neon-detect
 %patch21 -p1 -b .gn-bootstrap-verbose
+%patch22 -p1 -b .qt57
 # fix // in #include in content/renderer/gpu to avoid debugedit failure
 sed -i -e 's!gpu//!gpu/!g' \
   src/3rdparty/chromium/content/renderer/gpu/compositor_forwarding_message_filter.cc
@@ -570,6 +573,7 @@ done
 - Drop system-re2 patch (patching the no longer used unbundle/re2.gn), the
   QtWebEngine re2/BUILD.gn is already correct
 - Explicitly force use_system_re2, the autodetection does not work on F25
+- Fix FTBFS with Qt 5.7
 
 * Tue Oct 10 2017 Rex Dieter <rdieter@fedoraproject.org> - 5.9.2-1
 - Update to 5.9.2

qtwebengine-opensource-src-5.9.2-qt57.patch

@@ -0,0 +1,19 @@
+diff -ur qtwebengine-opensource-src-5.9.2/src/core/web_contents_adapter.cpp qtwebengine-opensource-src-5.9.2-qt57/src/core/web_contents_adapter.cpp
+--- qtwebengine-opensource-src-5.9.2/src/core/web_contents_adapter.cpp	2017-10-03 11:06:38.000000000 +0200
++++ qtwebengine-opensource-src-5.9.2-qt57/src/core/web_contents_adapter.cpp	2017-11-16 17:17:51.072511997 +0100
+@@ -1265,7 +1265,15 @@
+     }
+ 
+     const QString &fileName = toQt(dropData.file_description_filename);
++#if (QT_VERSION >= QT_VERSION_CHECK(5, 9, 0))
+     const QString &filePath = d->dndTmpDir->filePath(fileName);
++#else
++    QString filePath = d->dndTmpDir->path();
++    if (!filePath.isEmpty()) {
++        filePath += QLatin1Char('/');
++        filePath += fileName;
++    }
++#endif
+     QFile file(filePath);
+     if (!file.open(QIODevice::WriteOnly)) {
+         qWarning("Cannot write temporary file %s.", qUtf8Printable(filePath));