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 07850d4216848429ee7d2284eba0336ccc8aa4dd..ca1276472296afc346d0ab71fed61ffa835e2887 100644
--- a/ppapi/native_client/src/trusted/plugin/service_runtime.h
+++ b/ppapi/native_client/src/trusted/plugin/service_runtime.h
@@ -41,6 +41,7 @@ namespace plugin {
 
 class ErrorInfo;
 class Manifest;
+class OpenManifestEntryAsyncCallback;
 class Plugin;
 class SrpcClient;
 class ServiceRuntime;
@@ -87,13 +88,19 @@ struct OpenManifestEntryResource {
  public:
   OpenManifestEntryResource(const std::string& target_url,
                             struct NaClFileInfo* finfo,
-                            bool* op_complete)
+                            bool* op_complete,
+                            OpenManifestEntryAsyncCallback* callback)
       : url(target_url),
         file_info(finfo),
-        op_complete_ptr(op_complete) {}
+        op_complete_ptr(op_complete),
+        callback(callback) {}
+  ~OpenManifestEntryResource();
+  void MaybeRunCallback(int32_t pp_error);
+
   std::string url;
   struct NaClFileInfo* file_info;
   bool* op_complete_ptr;
+  OpenManifestEntryAsyncCallback* callback;
 };
 
 struct CloseManifestEntryResource {
@@ -170,6 +177,15 @@ 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
+  // a sync function and must be called on a non-main thread,
+  // OpenManifestEntryAsync 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,
+                              OpenManifestEntryAsyncCallback* callback);
+
  protected:
   virtual void PostMessage_MainThreadContinuation(PostMessageResource* p,
                                                   int32_t err);