<chromium> Blacklist the skypebuttons plugin

Even though plugins are disabled it happens that the libraries are
loaded and cause a crash since skypebuttons pulls Qt4 with it on
Linux and creates a dynamic linking error conflicting with Qt5
symbols.

Add the plugin library name to the blacklist to avoid it being
loaded altogether.
We have a similar fix in QtWebKit doing the same thing.

Reviewed-by: Andras Becsi <[email protected]>
Change-Id: I45abf31c4e94a8b61aff85765a91436dabae1b2e
Reviewed-by: Zeno Albisser <[email protected]>

Author: jturcotte

chromium/content/common/plugin_list_posix.cc

@@ -151,6 +151,7 @@ bool IsUndesirablePlugin(const WebPluginInfo& info) {
 // http://code.google.com/p/chromium/issues/detail?id=38229
 bool IsBlacklistedPlugin(const base::FilePath& path) {
   const char* kBlackListedPlugins[] = {
+    "skypebuttons.so",    // Crash on dlopen since it uses Qt4
     "nppdf.so",           // Adobe PDF
   };
   std::string filename = path.BaseName().value();