DevTools: Attach all Service Workers except for old redundant ones.

content/browser/devtools/service_worker_devtools_agent_host.h

Index: content/browser/devtools/service_worker_devtools_agent_host.h
diff --git a/content/browser/devtools/service_worker_devtools_agent_host.h b/content/browser/devtools/service_worker_devtools_agent_host.h
index a758a043e083a0d04d5b91fae0be58cfdd2f1ed9..9ff92960d0a38a8e816e90e4d7e5281cf4c5a062 100644
--- a/content/browser/devtools/service_worker_devtools_agent_host.h
+++ b/content/browser/devtools/service_worker_devtools_agent_host.h
@@ -10,6 +10,7 @@
 #include <map>
 
 #include "base/macros.h"
+#include "base/time/time.h"
 #include "content/browser/devtools/protocol/network_handler.h"
 #include "content/browser/devtools/service_worker_devtools_manager.h"
 #include "content/browser/devtools/worker_devtools_agent_host.h"
@@ -25,7 +26,8 @@ class ServiceWorkerDevToolsAgentHost : public WorkerDevToolsAgentHost {
       ServiceWorkerDevToolsManager::ServiceWorkerIdentifier;
 
   ServiceWorkerDevToolsAgentHost(WorkerId worker_id,
-                                 const ServiceWorkerIdentifier& service_worker);
+                                 const ServiceWorkerIdentifier& service_worker,
+                                 bool is_installed_version);
 
   void UnregisterWorker();
 
@@ -39,15 +41,28 @@ class ServiceWorkerDevToolsAgentHost : public WorkerDevToolsAgentHost {
   // WorkerDevToolsAgentHost overrides.
   void OnAttachedStateChanged(bool attached) override;
 
+  void WorkerVersionInstalled();
+  void WorkerVersionDoomed();
+
   int64_t service_worker_version_id() const;
   GURL scope() const;
 
+  // If the ServiceWorker has been installed before the worker instance started,
+  // it returns the time when the instance started. Otherwise returns the time
+  // when the ServiceWorker was installed.
+  base::Time version_installed_time() const { return version_installed_time_; }
+
+  // Returns the time when the ServiceWorker was doomed.
+  base::Time version_doomed_time() const { return version_doomed_time_; }
+
   bool Matches(const ServiceWorkerIdentifier& other);
 
  private:
   ~ServiceWorkerDevToolsAgentHost() override;
   std::unique_ptr<ServiceWorkerIdentifier> service_worker_;
   std::unique_ptr<devtools::network::NetworkHandler> network_handler_;
+  base::Time version_installed_time_;
+  base::Time version_doomed_time_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerDevToolsAgentHost);
 };