Reland of ServiceWorker: Implement StartWorker by using mojo

content/browser/service_worker/embedded_worker_registry.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_REGISTRY_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_REGISTRY_H_
 
 #include <map>
 #include <memory>
 #include <set>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 
-struct EmbeddedWorkerMsg_StartWorker_Params;
 class GURL;
 
 namespace IPC {
 class Message;
 class Sender;
 }
 
 namespace content {
 
 class EmbeddedWorkerInstance;
+struct EmbeddedWorkerStartParams;
 class MessagePortMessageFilter;
 class ServiceWorkerContextCore;
 
 // Acts as a thin stub between MessageFilter and each EmbeddedWorkerInstance,
 // which sends/receives messages to/from each EmbeddedWorker in child process.
 //
 // Hangs off ServiceWorkerContextCore (its reference is also held by each
 // EmbeddedWorkerInstance).  Operated only on IO thread.
 class CONTENT_EXPORT EmbeddedWorkerRegistry
     : public NON_EXPORTED_BASE(base::RefCounted<EmbeddedWorkerRegistry>) {
@@ skipping 10 matching lines @@
       EmbeddedWorkerRegistry* old_registry);
 
   bool OnMessageReceived(const IPC::Message& message, int process_id);
 
   // Creates and removes a new worker instance entry for bookkeeping.
   // This doesn't actually start or stop the worker.
   std::unique_ptr<EmbeddedWorkerInstance> CreateWorker();
 
   // Called from EmbeddedWorkerInstance, relayed to the child process.
   ServiceWorkerStatusCode SendStartWorker(
-      std::unique_ptr<EmbeddedWorkerMsg_StartWorker_Params> params,
+      std::unique_ptr<EmbeddedWorkerStartParams> params,
       int process_id);
   ServiceWorkerStatusCode StopWorker(int process_id,
                                      int embedded_worker_id);
 
   // Stop all active workers, even if they're handling events.
   void Shutdown();
 
   // Called back from EmbeddedWorker in the child process, relayed via
   // ServiceWorkerDispatcherHost.
   void OnWorkerReadyForInspection(int process_id, int embedded_worker_id);
@@ skipping 34 matching lines @@
 
   MessagePortMessageFilter* MessagePortMessageFilterForProcess(int process_id);
 
  private:
   friend class base::RefCounted<EmbeddedWorkerRegistry>;
   friend class EmbeddedWorkerInstance;
   friend class EmbeddedWorkerInstanceTest;
   FRIEND_TEST_ALL_PREFIXES(EmbeddedWorkerInstanceTest,
                            RemoveWorkerInSharedProcess);
 
-  typedef std::map<int, EmbeddedWorkerInstance*> WorkerInstanceMap;
-  typedef std::map<int, IPC::Sender*> ProcessToSenderMap;
-  typedef std::map<int, MessagePortMessageFilter*>
-      ProcessToMessagePortMessageFilterMap;
+  using WorkerInstanceMap = std::map<int, EmbeddedWorkerInstance*>;
+  using ProcessToSenderMap = std::map<int, IPC::Sender*>;
+  using ProcessToMessagePortMessageFilterMap =
+      std::map<int, MessagePortMessageFilter*>;
 
   EmbeddedWorkerRegistry(
       const base::WeakPtr<ServiceWorkerContextCore>& context,
       int initial_embedded_worker_id);
   ~EmbeddedWorkerRegistry();
 
   ServiceWorkerStatusCode Send(int process_id, IPC::Message* message);
 
+  // Called when EmbeddedWorkerInstance is ready for IPC. This function
+  // prepares a route to the child worker thread.
+  // TODO(shimazu): Remove this function once mojofication is completed.
+  void BindWorkerToProcess(int process_id, int embedded_worker_id);
+
   // RemoveWorker is called when EmbeddedWorkerInstance is destructed.
   // |process_id| could be invalid (i.e. ChildProcessHost::kInvalidUniqueID)
   // if it's not running.
   void RemoveWorker(int process_id, int embedded_worker_id);
 
   EmbeddedWorkerInstance* GetWorkerForMessage(int process_id,
                                               int embedded_worker_id);
 
   base::WeakPtr<ServiceWorkerContextCore> context_;
 
   WorkerInstanceMap worker_map_;
   ProcessToSenderMap process_sender_map_;
   ProcessToMessagePortMessageFilterMap process_message_port_message_filter_map_;
 
   // Map from process_id to embedded_worker_id.
   // This map only contains starting and running workers.
   std::map<int, std::set<int> > worker_process_map_;
 
   int next_embedded_worker_id_;
   const int initial_embedded_worker_id_;
 
   DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerRegistry);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_REGISTRY_H_