PPAPI/NaCl: Reinitialize some stuff when the ipc proxy starts.

ppapi/shared_impl/ppp_instance_combined.cc

 // Copyright (c) 2012 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.
 
 #include "ppapi/shared_impl/ppp_instance_combined.h"
 #include "ppapi/shared_impl/proxy_lock.h"
 
 namespace ppapi {
 
+// static
+PPP_Instance_Combined* PPP_Instance_Combined::Create(
+    base::Callback<const void*(const char*)> get_interface_func) {
+  // Try 1.1.
+  const void* ppp_instance = get_interface_func.Run(PPP_INSTANCE_INTERFACE_1_1);
+  if (ppp_instance) {
+    const PPP_Instance_1_1* ppp_instance_1_1 =
+        static_cast<const PPP_Instance_1_1*>(ppp_instance);
+    return new PPP_Instance_Combined(*ppp_instance_1_1);
+  }
+  // Failing that, try 1.0.
+  ppp_instance = get_interface_func.Run(PPP_INSTANCE_INTERFACE_1_0);
+  if (ppp_instance) {
+    const PPP_Instance_1_0* ppp_instance_1_0 =
+        static_cast<const PPP_Instance_1_0*>(ppp_instance);
+    return new PPP_Instance_Combined(*ppp_instance_1_0);
+  }
+  // No supported PPP_Instance version found.
+  return NULL;
+}
+
 PPP_Instance_Combined::PPP_Instance_Combined(
     const PPP_Instance_1_0& instance_if)
     : did_change_view_1_0_(instance_if.DidChangeView) {
   instance_1_1_.DidCreate = instance_if.DidCreate;
   instance_1_1_.DidDestroy = instance_if.DidDestroy;
   instance_1_1_.DidChangeView = NULL;
   instance_1_1_.DidChangeFocus = instance_if.DidChangeFocus;
   instance_1_1_.HandleDocumentLoad = instance_if.HandleDocumentLoad;
 }
 
@@ skipping 34 matching lines @@
 
 PP_Bool PPP_Instance_Combined::HandleDocumentLoad(PP_Instance instance,
                                                   PP_Resource url_loader) {
   return CallWhileUnlocked(instance_1_1_.HandleDocumentLoad,
                            instance,
                            url_loader);
 }
 
 }  // namespace ppapi