Introduce worker_devtools_agent_route_id for EmbeddedWorker.

content/browser/service_worker/embedded_worker_test_helper.h

Index: content/browser/service_worker/embedded_worker_test_helper.h
diff --git a/content/browser/service_worker/embedded_worker_test_helper.h b/content/browser/service_worker/embedded_worker_test_helper.h
index af95f675fb02ca4943e834c06894c4b4a75b8ee8..2e9026d0b8a46b40474fcf2b26481949034e7f87 100644
--- a/content/browser/service_worker/embedded_worker_test_helper.h
+++ b/content/browser/service_worker/embedded_worker_test_helper.h
@@ -7,7 +7,9 @@
 
 #include <vector>
 
+#include "base/atomic_sequence_num.h"
 #include "base/callback.h"
+#include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_test_sink.h"
@@ -99,10 +101,22 @@ class EmbeddedWorkerTestHelper : public IPC::Sender,
   EmbeddedWorkerRegistry* registry();
 
  private:
+  class NextRoutingId : public base::RefCountedThreadSafe<NextRoutingId> {
+   public:
+    NextRoutingId() {}
+    int GetNext() { return atomic_sequence_number_.GetNext(); }
+
+   private:
+    friend class base::RefCountedThreadSafe<NextRoutingId>;
+    ~NextRoutingId() {}
+    base::AtomicSequenceNumber atomic_sequence_number_;
+  };
+
   void OnStartWorkerStub(int embedded_worker_id,
                          int64 service_worker_version_id,
                          const GURL& scope,
-                         const GURL& script_url);
+                         const GURL& script_url,
+                         int worker_devtools_agent_route_id);
   void OnStopWorkerStub(int embedded_worker_id);
   void OnMessageToWorkerStub(int thread_id,
                              int embedded_worker_id,
@@ -122,6 +136,8 @@ class EmbeddedWorkerTestHelper : public IPC::Sender,
   // Updated each time MessageToWorker message is received.
   int current_embedded_worker_id_;
 
+  scoped_refptr<NextRoutingId> next_routing_id_;
+
   base::WeakPtrFactory<EmbeddedWorkerTestHelper> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerTestHelper);