More scaffolding, add class ServiceWorkerProviderHost.

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 3a629770dc95fedb1770929363b825237a5cb571..8d6f44250d5da1540880d293bfd9162b0fc16c15 100644
--- a/content/browser/service_worker/service_worker_context_core.h
+++ b/content/browser/service_worker/service_worker_context_core.h
@@ -6,7 +6,10 @@
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_CORE_H_
 
 #include "base/files/file_path.h"
+#include "base/id_map.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "content/browser/service_worker/service_worker_provider_host.h"
 #include "content/common/content_export.h"
 
 namespace base {
@@ -19,6 +22,8 @@ class QuotaManagerProxy;
 
 namespace content {
 
+class ServiceWorkerProviderHost;
+
 // This class manages data associated with service workers.
 // The class is single threaded and should only be used on the IO thread.
 // In chromium, there is one instance per storagepartition. This class
@@ -33,9 +38,24 @@ class CONTENT_EXPORT ServiceWorkerContextCore
                            quota::QuotaManagerProxy* quota_manager_proxy);
   ~ServiceWorkerContextCore();
 
+  // The context class owns the set of ProviderHosts.
+  ServiceWorkerProviderHost* GetProviderHost(int process_id, int provider_id);
+  void AddProviderHost(scoped_ptr<ServiceWorkerProviderHost> provider_host);
+  void RemoveProviderHost(int process_id, int provider_id);
+  void RemoveAllProviderHostsForProcess(int process_id);
+
+  // Checks the cmdline flag.
   bool IsEnabled();
 
  private:
+  typedef IDMap<ServiceWorkerProviderHost, IDMapOwnPointer> ProviderMap;
+  typedef IDMap<ProviderMap, IDMapOwnPointer> ProcessToProviderMap;
+
+  ProviderMap* GetProviderMapForProcess(int process_id) {
+    return providers_.Lookup(process_id);
+  }
+
+  ProcessToProviderMap providers_;
   scoped_refptr<quota::QuotaManagerProxy> quota_manager_proxy_;
   base::FilePath path_;
 };