[DevTools] Implement Target.setDiscoverTargets method.

content/browser/devtools/service_worker_devtools_agent_host.cc

Index: content/browser/devtools/service_worker_devtools_agent_host.cc
diff --git a/content/browser/devtools/service_worker_devtools_agent_host.cc b/content/browser/devtools/service_worker_devtools_agent_host.cc
index 8337def3feb34b208f33b3a8948f29613d8d5291..4c50442b0d79420ce4623598555d4701a087703d 100644
--- a/content/browser/devtools/service_worker_devtools_agent_host.cc
+++ b/content/browser/devtools/service_worker_devtools_agent_host.cc
@@ -5,6 +5,7 @@
 #include "content/browser/devtools/service_worker_devtools_agent_host.h"
 
 #include "base/strings/stringprintf.h"
+#include "content/browser/devtools/devtools_manager.h"
 #include "content/browser/devtools/devtools_protocol_handler.h"
 #include "content/browser/devtools/protocol/devtools_protocol_dispatcher.h"
 #include "content/browser/devtools/service_worker_devtools_manager.h"
@@ -63,6 +64,7 @@ ServiceWorkerDevToolsAgentHost::ServiceWorkerDevToolsAgentHost(
                                                    : base::Time()) {
   DevToolsProtocolDispatcher* dispatcher = protocol_handler()->dispatcher();
   dispatcher->SetNetworkHandler(network_handler_.get());
+  DevToolsManager::GetInstance()->AgentHostCreated(this);
 }
 
 std::string ServiceWorkerDevToolsAgentHost::GetType() {
@@ -135,6 +137,7 @@ bool ServiceWorkerDevToolsAgentHost::Matches(
 ServiceWorkerDevToolsAgentHost::~ServiceWorkerDevToolsAgentHost() {
   ServiceWorkerDevToolsManager::GetInstance()->RemoveInspectedWorkerData(
       worker_id());
+  DevToolsManager::GetInstance()->AgentHostDestroyed(this);
 }
 
 }  // namespace content