[DevTools] Implement Target.setDiscoverTargets method.

content/browser/devtools/shared_worker_devtools_agent_host.cc

Index: content/browser/devtools/shared_worker_devtools_agent_host.cc
diff --git a/content/browser/devtools/shared_worker_devtools_agent_host.cc b/content/browser/devtools/shared_worker_devtools_agent_host.cc
index c5ea9be2fb26d4d42a281c62cc991080fc77571a..6995bb9875efb2bf1062d49e435931a399efc308 100644
--- a/content/browser/devtools/shared_worker_devtools_agent_host.cc
+++ b/content/browser/devtools/shared_worker_devtools_agent_host.cc
@@ -5,6 +5,7 @@
 #include "content/browser/devtools/shared_worker_devtools_agent_host.h"
 
 #include "base/strings/utf_string_conversions.h"
+#include "content/browser/devtools/devtools_manager.h"
 #include "content/browser/devtools/shared_worker_devtools_manager.h"
 #include "content/browser/shared_worker/shared_worker_instance.h"
 #include "content/browser/shared_worker/shared_worker_service_impl.h"
@@ -27,6 +28,7 @@ SharedWorkerDevToolsAgentHost::SharedWorkerDevToolsAgentHost(
     const SharedWorkerInstance& shared_worker)
     : WorkerDevToolsAgentHost(worker_id),
       shared_worker_(new SharedWorkerInstance(shared_worker)) {
+  DevToolsManager::GetInstance()->AgentHostCreated(this);
 }
 
 std::string SharedWorkerDevToolsAgentHost::GetType() {
@@ -62,6 +64,7 @@ bool SharedWorkerDevToolsAgentHost::Matches(
 SharedWorkerDevToolsAgentHost::~SharedWorkerDevToolsAgentHost() {
   SharedWorkerDevToolsManager::GetInstance()->RemoveInspectedWorkerData(
       worker_id());
+  DevToolsManager::GetInstance()->AgentHostDestroyed(this);
 }
 
 }  // namespace content