Implement EmbeddedWorkerContextClient.setCachedMetadata/clearCachedMetadata

content/browser/service_worker/service_worker_script_cache_map.h

Index: content/browser/service_worker/service_worker_script_cache_map.h
diff --git a/content/browser/service_worker/service_worker_script_cache_map.h b/content/browser/service_worker/service_worker_script_cache_map.h
index 7650517c7aa93e52d6358fa16cdf0790a390bda9..7d3366aa943ad35415d62fe2e2104bf40d2eca2c 100644
--- a/content/browser/service_worker/service_worker_script_cache_map.h
+++ b/content/browser/service_worker/service_worker_script_cache_map.h
@@ -12,6 +12,7 @@
 #include "base/memory/weak_ptr.h"
 #include "content/browser/service_worker/service_worker_database.h"
 #include "content/common/content_export.h"
+#include "net/base/completion_callback.h"
 #include "net/url_request/url_request_status.h"
 
 class GURL;
@@ -20,6 +21,7 @@ namespace content {
 
 class ServiceWorkerContextCore;
 class ServiceWorkerVersion;
+class ServiceWorkerResponseMetadataWriter;
 
 // Class that maintains the mapping between urls and a resource id
 // for a particular version's implicit script resources.
@@ -46,6 +48,13 @@ class CONTENT_EXPORT ServiceWorkerScriptCacheMap {
   void SetResources(
      const std::vector<ServiceWorkerDatabase::ResourceRecord>& resources);
 
+  // Writes the metadata of the existing script.
+  void WriteMetadata(const GURL& url,
+                     const std::vector<char>& data,
+                     const net::CompletionCallback& callback);
+  // Clears the metadata of the existing script.
+  void ClearMetadata(const GURL& url, const net::CompletionCallback& callback);
+
   size_t size() const { return resource_map_.size(); }
 
   const net::URLRequestStatus& main_script_status() const {
@@ -66,12 +75,18 @@ class CONTENT_EXPORT ServiceWorkerScriptCacheMap {
       base::WeakPtr<ServiceWorkerContextCore> context);
   ~ServiceWorkerScriptCacheMap();
 
+  void OnMetadataWritten(scoped_ptr<ServiceWorkerResponseMetadataWriter> writer,
+                         const net::CompletionCallback& callback,
+                         int result);
+
   ServiceWorkerVersion* owner_;
   base::WeakPtr<ServiceWorkerContextCore> context_;
   ResourceMap resource_map_;
   net::URLRequestStatus main_script_status_;
   std::string main_script_status_message_;
 
+  base::WeakPtrFactory<ServiceWorkerScriptCacheMap> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerScriptCacheMap);
 };