Updated WebKit to 6623b5da196390748dc619461739f9cb84524736

Integrated changes:

|| <https://webkit.org/b/38401> || Make repaint throttling parameters configurable runtime. ||
|| <https://webkit.org/b/40073> || [Qt] rendering error in mediawiki ||
|| <https://webkit.org/b/36463> || Spatial Navigation: make it work with focusable elements in overflow content ||
|| <https://webkit.org/b/39857> || GIFs loop one time too few ||
|| <https://webkit.org/b/36818> || [Qt] Animated GIF images does not animate 10x as expected by default. ||
|| <https://webkit.org/b/37844> || [Qt] Image::drawTiled animations does not work ||
|| <https://webkit.org/b/40567> || [Qt] QtWebKit crashes while initializing flash plugin 10.1.53.64... ||
|| <https://webkit.org/b/39439> || Spatial Navigation: using offset{Left,Top} is not enough to get the proper inner frames position ||
|| <https://webkit.org/b/39195> || Spatial Navigation: refactor scrollInDirection to work with scrollable content ||

1 files changed, 23 insertions, 0 deletions

diff --git a/src/3rdparty/webkit/WebCore/plugins/qt/PluginPackageQt.cpp b/src/3rdparty/webkit/WebCore/plugins/qt/PluginPackageQt.cpp
index 74deaf6..d5292fe 100644
--- a/src/3rdparty/webkit/WebCore/plugins/qt/PluginPackageQt.cpp
+++ b/src/3rdparty/webkit/WebCore/plugins/qt/PluginPackageQt.cpp
@@ -35,6 +35,8 @@
 
 namespace WebCore {
 
+typedef void gtkInitFunc(int *argc, char ***argv);
+
 bool PluginPackage::fetchInfo()
 {
     if (!load())
@@ -109,6 +111,7 @@ bool PluginPackage::load()
 
     NP_InitializeFuncPtr NP_Initialize;
     NPError npErr;
+    gtkInitFunc* gtkInit;
 
     NP_Initialize = (NP_InitializeFuncPtr)m_module->resolve("NP_Initialize");
     m_NPP_Shutdown = (NPP_ShutdownProcPtr)m_module->resolve("NP_Shutdown");
@@ -127,6 +130,26 @@ bool PluginPackage::load()
         m_browserFuncs.getvalue = staticPluginQuirkRequiresGtkToolKit_NPN_GetValue;
     }
 
+    // WORKAROUND: Prevent gtk based plugin crashes such as BR# 40567 by
+    // explicitly forcing the initializing of Gtk, i.e. calling gtk_init,
+    // whenver the symbol is present in the plugin library loaded above.
+    // Note that this workaround is based on code from the NSPluginClass ctor
+    // in KDE's kdebase/apps/nsplugins/viewer/nsplugin.cpp file.
+    gtkInit = (gtkInitFunc*)m_module->resolve("gtk_init");
+    if (gtkInit) {
+        // Prevent gtk_init() from replacing the X error handlers, since the Gtk
+        // handlers abort when they receive an X error, thus killing the viewer.
+#ifdef Q_WS_X11
+        int (*old_error_handler)(Display*, XErrorEvent*) = XSetErrorHandler(0);
+        int (*old_io_error_handler)(Display*) = XSetIOErrorHandler(0);
+#endif
+        gtkInit(0, 0);
+#ifdef Q_WS_X11
+        XSetErrorHandler(old_error_handler);
+        XSetIOErrorHandler(old_io_error_handler);
+#endif
+    }
+
 #if defined(XP_UNIX)
     npErr = NP_Initialize(&m_browserFuncs, &m_pluginFuncs);
 #else