Implement asynchronous interface/plumbing for GetDefaultPrintSettings.

webkit/plugins/ppapi/ppapi_plugin_instance.h

 // 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.
 
 #ifndef WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_
 #define WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 364 matching lines @@
                                  double maximium_factor) OVERRIDE;
   virtual void PostMessage(PP_Instance instance, PP_Var message) OVERRIDE;
   virtual PP_Bool SetCursor(PP_Instance instance,
                             PP_MouseCursor_Type type,
                             PP_Resource image,
                             const PP_Point* hot_spot) OVERRIDE;
   virtual int32_t LockMouse(
       PP_Instance instance,
       scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
   virtual void UnlockMouse(PP_Instance instance) OVERRIDE;
-  virtual PP_Bool GetDefaultPrintSettings(
+  virtual int32_t GetDefaultPrintSettings(
       PP_Instance instance,
-      PP_PrintSettings_Dev* print_settings) OVERRIDE;
+      PP_PrintSettings_Dev* print_settings,
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
   virtual void SetTextInputType(PP_Instance instance,
                                 PP_TextInput_Type type) OVERRIDE;
   virtual void UpdateCaretPosition(PP_Instance instance,
                                    const PP_Rect& caret,
                                    const PP_Rect& bounding_box) OVERRIDE;
   virtual void CancelCompositionText(PP_Instance instance) OVERRIDE;
   virtual void SelectionChanged(PP_Instance instance) OVERRIDE;
   virtual void UpdateSurroundingText(PP_Instance instance,
                                      const char* text,
                                      uint32_t caret,
@@ skipping 278 matching lines @@
   // the pointer so we can re-send it later if we are reset to talk to NaCl.
   scoped_refptr<PPB_URLLoader_Impl> document_loader_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginInstance);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_