DevTools: pass agent host id to the renderer (content).

content/renderer/service_worker/embedded_worker_devtools_agent.cc

Index: content/renderer/service_worker/embedded_worker_devtools_agent.cc
diff --git a/content/renderer/service_worker/embedded_worker_devtools_agent.cc b/content/renderer/service_worker/embedded_worker_devtools_agent.cc
index 21db9d5153dc220e56ad0f53840dafe6fbed3011..bb76bafc07f4396cba85969c773e0d037a9111dc 100644
--- a/content/renderer/service_worker/embedded_worker_devtools_agent.cc
+++ b/content/renderer/service_worker/embedded_worker_devtools_agent.cc
@@ -43,11 +43,12 @@ bool EmbeddedWorkerDevToolsAgent::OnMessageReceived(
   return handled;
 }
 
-void EmbeddedWorkerDevToolsAgent::OnAttach() {
+void EmbeddedWorkerDevToolsAgent::OnAttach(const std::string& host_id) {
   webworker_->attachDevTools();
 }
 
-void EmbeddedWorkerDevToolsAgent::OnReattach(const std::string& state) {
+void EmbeddedWorkerDevToolsAgent::OnReattach(const std::string& host_id,
+                                             const std::string& state) {
   webworker_->reattachDevTools(WebString::fromUTF8(state));
 }