[Proof-of-concept] PlzNavigate and Service Worker

content/browser/service_worker/service_worker_context_core.h

Index: content/browser/service_worker/service_worker_context_core.h
diff --git a/content/browser/service_worker/service_worker_context_core.h b/content/browser/service_worker/service_worker_context_core.h
index ecffaca878c414174b0822effb9f8cd1e1c12c04..358790b2565cdec27dd5552ca1455127933d1b00 100644
--- a/content/browser/service_worker/service_worker_context_core.h
+++ b/content/browser/service_worker/service_worker_context_core.h
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "base/callback.h"
+#include "base/containers/scoped_ptr_hash_map.h"
 #include "base/files/file_path.h"
 #include "base/id_map.h"
 #include "base/memory/scoped_ptr.h"
@@ -65,6 +66,8 @@ class CONTENT_EXPORT ServiceWorkerContextCore
 
   using ProviderByClientUUIDMap =
       std::map<std::string, ServiceWorkerProviderHost*>;
+  using NavigationProviderHostMap =
+      base::ScopedPtrHashMap<int, scoped_ptr<ServiceWorkerProviderHost>>;
 
   // Directory for ServiceWorkerStorage and ServiceWorkerCacheManager.
   static const base::FilePath::CharType kServiceWorkerDirectory[];
@@ -156,6 +159,14 @@ class CONTENT_EXPORT ServiceWorkerContextCore
   scoped_ptr<ProviderHostIterator> GetClientProviderHostIterator(
       const GURL& origin);
 
+  // PlzNavigate:
+  // Creates a new ProviderHost for browser side navitgation.
+  scoped_ptr<ServiceWorkerProviderHost> CreateNavigationProviderHost();
+  void RegisterNavigationProviderHost(
+      scoped_ptr<ServiceWorkerProviderHost> provider_host);
+  scoped_ptr<ServiceWorkerProviderHost> TakeNavigationProviderHost(
+      int navigation_provider_id);
+
   // Maintains a map from Client UUID to ProviderHost.
   // (Note: instead of maintaining 2 maps we might be able to uniformly use
   // UUID instead of process_id+provider_id elsewhere. For now I'm leaving
@@ -267,8 +278,11 @@ class CONTENT_EXPORT ServiceWorkerContextCore
   std::map<int64, ServiceWorkerRegistration*> live_registrations_;
   std::map<int64, ServiceWorkerVersion*> live_versions_;
   std::map<int64, scoped_refptr<ServiceWorkerVersion>> protected_versions_;
+
+  NavigationProviderHostMap navigation_provider_host_map_;
   int next_handle_id_;
   int next_registration_handle_id_;
+  int next_navigation_provider_host_id_;
   scoped_refptr<base::ObserverListThreadSafe<ServiceWorkerContextObserver>>
       observer_list_;
   base::WeakPtrFactory<ServiceWorkerContextCore> weak_factory_;