When a plugin calls NPN_SetException, pass the exception along to every rende...

chrome/renderer/plugin_channel_host.cc

Index: chrome/renderer/plugin_channel_host.cc
===================================================================
--- chrome/renderer/plugin_channel_host.cc	(revision 32119)
+++ chrome/renderer/plugin_channel_host.cc	(working copy)
@@ -6,6 +6,8 @@
 
 #include "chrome/common/plugin_messages.h"
 
+#include "third_party/WebKit/WebKit/chromium/public/WebBindings.h"
+
 // A simple MessageFilter that will ignore all messages and respond to sync
 // messages with an error when is_listening_ is false.
 class IsListeningFilter : public IPC::ChannelProxy::MessageFilter {
@@ -107,6 +109,17 @@
   PluginChannelBase::RemoveRoute(route_id);
 }
 
+void PluginChannelHost::OnControlMessageReceived(const IPC::Message& message) {
+  IPC_BEGIN_MESSAGE_MAP(PluginChannelHost, message)
+    IPC_MESSAGE_HANDLER(PluginHostMsg_SetException, OnSetException)
+    IPC_MESSAGE_UNHANDLED_ERROR()
+  IPC_END_MESSAGE_MAP()
+}
+
+void PluginChannelHost::OnSetException(const std::string& message) {
+  WebKit::WebBindings::setException(NULL, message.c_str());
+}
+
 void PluginChannelHost::OnChannelError() {
   PluginChannelBase::OnChannelError();