Fix for 128506: Random Chinese/Japanese characters are missing in documents printed via the syst...

content/common/view_messages.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.
 
 // IPC messages for page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/process.h"
 #include "base/shared_memory.h"
+#include "base/string16.h"
 #include "content/common/content_export.h"
 #include "content/common/content_param_traits.h"
 #include "content/common/edit_command.h"
 #include "content/common/navigation_gesture.h"
 #include "content/common/view_message_enums.h"
 #include "content/public/common/common_param_traits.h"
 #include "content/public/common/context_menu_params.h"
 #include "content/public/common/file_chooser_params.h"
 #include "content/public/common/frame_navigate_params.h"
 #include "content/public/common/javascript_message_type.h"
@@ skipping 2398 matching lines @@
                             content::ThreeDAPIType /* requester */,
                             bool /* blocked */)
 
 // Sent by the renderer process to indicate that a context was lost by
 // client 3D content (Pepper 3D, WebGL) running on the page at the
 // given URL.
 IPC_MESSAGE_CONTROL3(ViewHostMsg_DidLose3DContext,
                      GURL /* top_origin_url */,
                      content::ThreeDAPIType /* context_type */,
                      int /* arb_robustness_status_code */)
+
+#if defined(OS_WIN)
+// Request that the given font characters be loaded by the browser so it's
+// cached by the OS. Please see RenderMessageFilter::OnPreCacheFontCharacters
+// for details.
+IPC_SYNC_MESSAGE_CONTROL2_0(ViewHostMsg_PreCacheFontCharacters,
+                            LOGFONT /* font_data */,
+                            string16 /* characters */)
+#endif