Define DevTools content API

content/worker/shared_worker_devtools_agent.cc

Index: content/worker/shared_worker_devtools_agent.cc
diff --git a/content/worker/shared_worker_devtools_agent.cc b/content/worker/shared_worker_devtools_agent.cc
index 702105d5d649329b3c269efa5bbf2ffbe4c9c5b1..9e89757573ad2470a898bf614a0217541f0d4b46 100644
--- a/content/worker/shared_worker_devtools_agent.cc
+++ b/content/worker/shared_worker_devtools_agent.cc
@@ -43,10 +43,9 @@ bool SharedWorkerDevToolsAgent::OnMessageReceived(const IPC::Message& message) {
 
 void SharedWorkerDevToolsAgent::SendDevToolsMessage(
     const WebKit::WebString& message) {
-    IPC::Message m = DevToolsClientMsg_DispatchOnInspectorFrontend(
+    Send(new DevToolsClientMsg_DispatchOnInspectorFrontend(
         route_id_,
-        message.utf8());
-    Send(new DevToolsHostMsg_ForwardToClient(route_id_, m));
+        message.utf8()));
 }
 
 void SharedWorkerDevToolsAgent::SaveDevToolsAgentState(