Implement open_resource in non-SFI mode.

ppapi/native_client/src/trusted/plugin/service_runtime.h

Index: ppapi/native_client/src/trusted/plugin/service_runtime.h
diff --git a/ppapi/native_client/src/trusted/plugin/service_runtime.h b/ppapi/native_client/src/trusted/plugin/service_runtime.h
index 79ef7c2abd06956d3d0e141afc5067782bd77430..ab0bca2f60de80994d658fd76b04e2fe8ead25c2 100644
--- a/ppapi/native_client/src/trusted/plugin/service_runtime.h
+++ b/ppapi/native_client/src/trusted/plugin/service_runtime.h
@@ -87,13 +87,20 @@ struct OpenManifestEntryResource {
  public:
   OpenManifestEntryResource(const std::string& target_url,
                             struct NaClFileInfo* finfo,
-                            bool* op_complete)
+                            bool* op_complete,
+                            const pp::CompletionCallback& callback)
       : url(target_url),
         file_info(finfo),
-        op_complete_ptr(op_complete) {}
+        op_complete_ptr(op_complete),
+        callback(callback) {}
+  ~OpenManifestEntryResource() {
+    if (callback.pp_completion_callback().func)
+      callback.RunAndClear(PP_ERROR_ABORTED);
+  }
   std::string url;
   struct NaClFileInfo* file_info;
   bool* op_complete_ptr;
+  pp::CompletionCallback callback;
 };
 
 struct CloseManifestEntryResource {
@@ -172,6 +179,15 @@ class PluginReverseInterface: public nacl::ReverseInterface {
                            const pp::FileIO& file_io);
   void AddTempQuotaManagedFile(const nacl::string& file_id);
 
+  // This is a sibling of OpenManifestEntry. While OpenManifestEntry is
+  // sync function and must be called on a non-main thread, this must be
+  // called on the main thread. Upon completion (even on error), callback will
+  // be invoked. The caller has responsibility to keep the memory passed to
+  // info until callback is invoked.
+  void OpenManifestEntryAsync(const nacl::string& key,
+                              struct NaClFileInfo* info,
+                              const pp::CompletionCallback& callback);
+
  protected:
   virtual void PostMessage_MainThreadContinuation(PostMessageResource* p,
                                                   int32_t err);