Don't handle DispatchOnInspectorBackend msg for SharedWorkers in DevToolsAgentFilter.

content/renderer/devtools/devtools_agent_filter.h

Index: content/renderer/devtools/devtools_agent_filter.h
diff --git a/content/renderer/devtools/devtools_agent_filter.h b/content/renderer/devtools/devtools_agent_filter.h
index e7f78613807bcccb8f50885661dbf2a1e8acf3b9..8935833e4b201dbab672de4065044e1da5d7b62c 100644
--- a/content/renderer/devtools/devtools_agent_filter.h
+++ b/content/renderer/devtools/devtools_agent_filter.h
@@ -5,6 +5,7 @@
 #ifndef CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_AGENT_FILTER_H_
 #define CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_AGENT_FILTER_H_
 
+#include <set>
 #include <string>
 
 #include "ipc/ipc_channel_proxy.h"
@@ -33,16 +34,28 @@ class DevToolsAgentFilter : public IPC::ChannelProxy::MessageFilter {
   // IPC::ChannelProxy::MessageFilter override. Called on IO thread.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
+  // Called on the main thread.
+  void AddSharedWorkerRouteOnMainThread(int32 routing_id);
+  void RemoveSharedWorkerRouteOnMainThread(int32 routing_id);
+
  protected:
   virtual ~DevToolsAgentFilter();
 
  private:
   void OnDispatchOnInspectorBackend(const std::string& message);
 
+  // Called on IO thread
+  void AddSharedWorkerRoute(int32 routing_id);
+  void RemoveSharedWorkerRoute(int32 routing_id);
+
   bool message_handled_;
   base::MessageLoop* render_thread_loop_;
+  // Proxy to the IO message loop.
+  scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;
   int current_routing_id_;
 
+  std::set<int32> shared_worker_routes_;
+
   DISALLOW_COPY_AND_ASSIGN(DevToolsAgentFilter);
 };