Implement open_resource in non-SFI mode.

components/nacl/renderer/manifest_service_channel.h

 // Copyright 2014 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 COMPONENTS_NACL_RENDERER_MANIFEST_SERVICE_CHANNEL_H_
 #define COMPONENTS_NACL_RENDERER_MANIFEST_SERVICE_CHANNEL_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "base/platform_file.h"
+#include "base/process/process.h"
+#include "base/synchronization/lock.h"
 #include "ipc/ipc_listener.h"
 
 namespace base {
 class WaitableEvent;
 }  // namespace base
 
 namespace IPC {
 struct ChannelHandle;
 class Message;
 class SyncChannel;
 }  // namespace IPC
 
 namespace nacl {
 
 class ManifestServiceChannel : public IPC::Listener {
  public:
+  typedef base::Callback<void(const base::PlatformFile&)> OpenResourceCallback;
+
   class Delegate {
    public:
     virtual ~Delegate() {}
 
     // Called when PPAPI initialization in the NaCl plugin is finished.
     virtual void StartupInitializationComplete() = 0;
 
-    // TODO(hidehiko): Add OpenResource() here.
+    // Called when irt_open_resource() is invoked in the NaCl plugin.
+    // Upon completion, callback is invoked with the platform file.
+    virtual void OpenResource(
+        const std::string& key,
+        const OpenResourceCallback& callback) = 0;
   };
 
   ManifestServiceChannel(
       const IPC::ChannelHandle& handle,
       const base::Callback<void(int32_t)>& connected_callback,
       scoped_ptr<Delegate> delegate,
       base::WaitableEvent* waitable_event);
   virtual ~ManifestServiceChannel();
 
+  void Send(IPC::Message* message);
+
   // Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void OnChannelConnected(int32 peer_pid) OVERRIDE;
   virtual void OnChannelError() OVERRIDE;
 
  private:
   void OnStartupInitializationComplete();
+  void OnOpenResource(const std::string& key, IPC::Message* reply);
+#if !defined(OS_WIN)
+  void DidOpenResource(
+      IPC::Message* reply, const base::PlatformFile& platform_file);
+#endif
 
   base::Callback<void(int32_t)> connected_callback_;
   scoped_ptr<Delegate> delegate_;
   scoped_ptr<IPC::SyncChannel> channel_;
 
+  // Note: This should remain the last member so it'll be destroyed and
+  // invalidate the weak pointers before any other members are destroyed.
+  base::WeakPtrFactory<ManifestServiceChannel> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(ManifestServiceChannel);
 };
 
 }  // namespace nacl
 
 #endif  // COMPONENTS_NACL_RENDERER_MANIFEST_SERVICE_CHANNEL_H_