PNaCl on-demand installs: Make a separate async IPC to check if PNaCl is installed

chrome/renderer/pepper/pnacl_translation_resource_host.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 CHROME_RENDERER_PEPPER_PNACL_TRANSLATION_RESOURCE_HOST_H_
 #define CHROME_RENDERER_PEPPER_PNACL_TRANSLATION_RESOURCE_HOST_H_
 
 #include <map>
 
 #include "chrome/common/pnacl_types.h"
@@ skipping 13 matching lines @@
   explicit PnaclTranslationResourceHost(
       const scoped_refptr<base::MessageLoopProxy>& io_message_loop);
   void RequestNexeFd(int render_view_id,
                      PP_Instance instance,
                      const nacl::PnaclCacheInfo& cache_info,
                      PP_Bool* is_hit,
                      PP_FileHandle* file_handle,
                      scoped_refptr<ppapi::TrackedCallback> callback);
   void ReportTranslationFinished(PP_Instance instance);
 
+  // Ensure that PNaCl resources (pnacl-llc.nexe, linker, libs) are installed.
+  void EnsurePnaclInstalled(PP_Instance instance,
+                            scoped_refptr<ppapi::TrackedCallback> callback);
+
  protected:
   virtual ~PnaclTranslationResourceHost();
 
  private:
   class CacheRequestInfo {
    public:
     CacheRequestInfo(PP_Bool* hit,
                      PP_FileHandle* handle,
                      scoped_refptr<ppapi::TrackedCallback> cb);
 
     ~CacheRequestInfo();
 
     PP_Bool* is_hit;
     PP_FileHandle* file_handle;
     scoped_refptr<ppapi::TrackedCallback> callback;
   };
 
   // Maps the instance with an outstanding cache request to the info
   // about that request.
   typedef std::map<PP_Instance, CacheRequestInfo> CacheRequestInfoMap;
+  // Maps the instance to an outstanding ensure pnacl installed request.
+  typedef std::map<PP_Instance, scoped_refptr<ppapi::TrackedCallback> >
+      EnsurePnaclInstalledMap;
   // IPC::ChannelProxy::MessageFilter implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void OnFilterAdded(IPC::Channel* channel) OVERRIDE;
   virtual void OnFilterRemoved() OVERRIDE;
   virtual void OnChannelClosing() OVERRIDE;
 
   void OnNexeTempFileReply(PP_Instance instance,
                            bool is_hit,
                            IPC::PlatformFileForTransit file);
   void CleanupCacheRequests();
+  void OnEnsurePnaclInstalledReply(PP_Instance instance,
+                                   bool success);
+  void OnEnsurePnaclInstalledProgress(PP_Instance instance,
+                                      int64_t current_progress,
+                                      int64_t total);
+  void CleanupEnsurePnaclRequests();
 
   scoped_refptr<base::MessageLoopProxy> io_message_loop_;
   IPC::Channel* channel_;
 
   // Should be accessed on the io thread.
   CacheRequestInfoMap pending_cache_requests_;
+  EnsurePnaclInstalledMap pending_ensure_pnacl_requests_;
 
   DISALLOW_COPY_AND_ASSIGN(PnaclTranslationResourceHost);
 };
 
 #endif  // CHROME_RENDERER_PEPPER_PNACL_TRANSLATION_RESOURCE_HOST_H_