Removed use of memset with PrintMsg_Print_Params struct.

chrome/common/print_messages.h

 // Copyright (c) 2011 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 printing.
 // Multiply-included message file, hence no include guard.
 
+#include <vector>
+
 #include "base/values.h"
 #include "base/shared_memory.h"
 #include "ipc/ipc_message_macros.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/rect.h"
 
+#ifndef CHROME_COMMON_PRINT_MESSAGES_H_
+#define CHROME_COMMON_PRINT_MESSAGES_H_
+
+struct PrintMsg_Print_Params {
+  PrintMsg_Print_Params();
+  ~PrintMsg_Print_Params();
+
+  // Resets the members of the struct to 0.
+  void Reset();
+
+  gfx::Size page_size;
+  gfx::Size printable_size;
+  int margin_top;
+  int margin_left;
+  double dpi;
+  double min_shrink;
+  double max_shrink;
+  int desired_dpi;
+  int document_cookie;
+  bool selection_only;
+  bool supports_alpha_blend;
+  int preview_request_id;
+  bool is_first_request;
+  bool display_header_footer;
+  string16 date;
+  string16 title;
+  string16 url;
+};
+
+struct PrintMsg_PrintPages_Params {
+  PrintMsg_PrintPages_Params();
+  ~PrintMsg_PrintPages_Params();
+
+  // Resets the members of the struct to 0.
+  void Reset();
+
+  PrintMsg_Print_Params params;
+  std::vector<int> pages;
+};
+
+#endif  // CHROME_COMMON_PRINT_MESSAGES_H_
+
 #define IPC_MESSAGE_START PrintMsgStart
 
 // Parameters for a render request.
-IPC_STRUCT_BEGIN(PrintMsg_Print_Params)
+IPC_STRUCT_TRAITS_BEGIN(PrintMsg_Print_Params)
   // Physical size of the page, including non-printable margins,
   // in pixels according to dpi.
-  IPC_STRUCT_MEMBER(gfx::Size, page_size)
+  IPC_STRUCT_TRAITS_MEMBER(page_size)
 
   // In pixels according to dpi_x and dpi_y.
-  IPC_STRUCT_MEMBER(gfx::Size, printable_size)
+  IPC_STRUCT_TRAITS_MEMBER(printable_size)
 
   // The y-offset of the printable area, in pixels according to dpi.
-  IPC_STRUCT_MEMBER(int, margin_top)
+  IPC_STRUCT_TRAITS_MEMBER(margin_top)
 
   // The x-offset of the printable area, in pixels according to dpi.
-  IPC_STRUCT_MEMBER(int, margin_left)
+  IPC_STRUCT_TRAITS_MEMBER(margin_left)
 
   // Specifies dots per inch.
-  IPC_STRUCT_MEMBER(double, dpi)
+  IPC_STRUCT_TRAITS_MEMBER(dpi)
 
   // Minimum shrink factor. See PrintSettings::min_shrink for more information.
-  IPC_STRUCT_MEMBER(double, min_shrink)
+  IPC_STRUCT_TRAITS_MEMBER(min_shrink)
 
   // Maximum shrink factor. See PrintSettings::max_shrink for more information.
-  IPC_STRUCT_MEMBER(double, max_shrink)
+  IPC_STRUCT_TRAITS_MEMBER(max_shrink)
 
   // Desired apparent dpi on paper.
-  IPC_STRUCT_MEMBER(int, desired_dpi)
+  IPC_STRUCT_TRAITS_MEMBER(desired_dpi)
 
   // Cookie for the document to ensure correctness.
-  IPC_STRUCT_MEMBER(int, document_cookie)
+  IPC_STRUCT_TRAITS_MEMBER(document_cookie)
 
   // Should only print currently selected text.
-  IPC_STRUCT_MEMBER(bool, selection_only)
+  IPC_STRUCT_TRAITS_MEMBER(selection_only)
 
   // Does the printer support alpha blending?
-  IPC_STRUCT_MEMBER(bool, supports_alpha_blend)
+  IPC_STRUCT_TRAITS_MEMBER(supports_alpha_blend)
 
   // The id of the preview request, used only for print preview.
-  IPC_STRUCT_MEMBER(int, preview_request_id)
+  IPC_STRUCT_TRAITS_MEMBER(preview_request_id)
 
   // True if this is the first preview request, used only for print preview.
-  IPC_STRUCT_MEMBER(bool, is_first_request)
+  IPC_STRUCT_TRAITS_MEMBER(is_first_request)
 
   // Specifies if the header and footer should be rendered.
-  IPC_STRUCT_MEMBER(bool, display_header_footer)
+  IPC_STRUCT_TRAITS_MEMBER(display_header_footer)
 
   // Date string to be printed as header if requested by the user.
-  IPC_STRUCT_MEMBER(string16, date)
+  IPC_STRUCT_TRAITS_MEMBER(date)
 
   // Title string to be printed as header if requested by the user.
-  IPC_STRUCT_MEMBER(string16, title)
+  IPC_STRUCT_TRAITS_MEMBER(title)
 
   // URL string to be printed as footer if requested by the user.
-  IPC_STRUCT_MEMBER(string16, url)
-IPC_STRUCT_END()
+  IPC_STRUCT_TRAITS_MEMBER(url)
+IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_BEGIN(PrintMsg_PrintPage_Params)
   // Parameters to render the page as a printed page. It must always be the same
   // value for all the document.
   IPC_STRUCT_MEMBER(PrintMsg_Print_Params, params)
 
   // The page number is the indicator of the square that should be rendered
   // according to the layout specified in PrintMsg_Print_Params.
   IPC_STRUCT_MEMBER(int, page_number)
 IPC_STRUCT_END()
 
-IPC_STRUCT_BEGIN(PrintMsg_PrintPages_Params)
+IPC_STRUCT_TRAITS_BEGIN(PrintMsg_PrintPages_Params)
   // Parameters to render the page as a printed page. It must always be the same
   // value for all the document.
-  IPC_STRUCT_MEMBER(PrintMsg_Print_Params, params)
+  IPC_STRUCT_TRAITS_MEMBER(params)
 
   // If empty, this means a request to render all the printed pages.
-  IPC_STRUCT_MEMBER(std::vector<int>, pages)
-IPC_STRUCT_END()
+  IPC_STRUCT_TRAITS_MEMBER(pages)
+IPC_STRUCT_TRAITS_END()
 
 // Parameters to describe a rendered document.
 IPC_STRUCT_BEGIN(PrintHostMsg_DidPreviewDocument_Params)
   // True when we can reuse existing preview data. |metafile_data_handle| and
   // |data_size| should not be used when this is true.
   IPC_STRUCT_MEMBER(bool, reuse_existing_data)
 
   // A shared memory handle to metafile data.
   IPC_STRUCT_MEMBER(base::SharedMemoryHandle, metafile_data_handle)
 
@@ skipping 207 matching lines @@
 IPC_MESSAGE_ROUTED1(PrintHostMsg_PagesReadyForPreview,
                     PrintHostMsg_DidPreviewDocument_Params /* params */)
 
 // Tell the browser printing failed.
 IPC_MESSAGE_ROUTED1(PrintHostMsg_PrintingFailed,
                     int /* document cookie */)
 
 // Tell the browser print preview failed.
 IPC_MESSAGE_ROUTED1(PrintHostMsg_PrintPreviewFailed,
                     int /* document cookie */)