Bug 778866 - Abort from the I/O thread on abnormal shutdown of a plugin-process, in case the main thread is wedged and the Firefox process has already been killed, r=cjones

dom/plugins/ipc/PluginModuleChild.cpp

@@ -144,6 +144,8 @@ PluginModuleChild::Init(const std::string& aPluginFilename,
 {
     PLUGIN_LOG_DEBUG_METHOD;
 
+    GetIPCChannel()->SetAbortOnError(true);
+
 #ifdef XP_WIN
     COMMessageFilter::Initialize(this);
 #endif
@@ -595,6 +597,8 @@ PluginModuleChild::AnswerNP_Shutdown(NPError *rv)
     ResetEventHooks();
 #endif
 
+    GetIPCChannel()->SetAbortOnError(false);
+
     return true;
 }