Don't handle DispatchOnInspectorBackend msg for SharedWorkers in DevToolsAgentFilter.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 95b76d294789d4e834b56fea096be8b2816832ba..c53a2e4b36bc5cc2dfe9ca3a6b3874ccc83bbeff 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -661,6 +661,21 @@ void RenderThreadImpl::RemoveRoute(int32 routing_id) {
   ChildThread::RemoveRoute(routing_id);
 }
 
+void RenderThreadImpl::AddSharedWorkerRoute(int32 routing_id,
+                                            IPC::Listener* listener) {
+  AddRoute(routing_id, listener);
+  if (devtools_agent_message_filter_.get()) {
+    devtools_agent_message_filter_->AddSharedWorkerRouteOnUI(routing_id);
+  }
+}
+
+void RenderThreadImpl::RemoveSharedWorkerRoute(int32 routing_id) {
+  RemoveRoute(routing_id);
+  if (devtools_agent_message_filter_.get()) {
+    devtools_agent_message_filter_->RemoveSharedWorkerRouteOnUI(routing_id);
+  }
+}
+
 int RenderThreadImpl::GenerateRoutingID() {
   int routing_id = MSG_ROUTING_NONE;
   Send(new ViewHostMsg_GenerateRoutingID(&routing_id));