Make a new test to enforce the sizes of all structs and enums in the C API....

ppapi/c/dev/ppp_printing_dev.h

 // Copyright (c) 2010 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 PPAPI_C_DEV_PPP_PRINTING_DEV_H_
 #define PPAPI_C_DEV_PPP_PRINTING_DEV_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_rect.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_stdint.h"
 
 typedef enum {
   PP_PRINTORIENTATION_NORMAL         = 0,
   PP_PRINTORIENTATION_ROTATED_90_CW  = 1,
   PP_PRINTORIENTATION_ROTATED_180    = 2,
   PP_PRINTORIENTATION_ROTATED_90_CCW = 3
 } PP_PrintOrientation_Dev;
+PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_PrintOrientation_Dev, 4);
 
 typedef enum {
   PP_PRINTOUTPUTFORMAT_RASTER     = 0,
   PP_PRINTOUTPUTFORMAT_PDF        = 1,
   PP_PRINTOUTPUTFORMAT_POSTSCRIPT = 2
 } PP_PrintOutputFormat_Dev;
+PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_PrintOutputFormat_Dev, 4);
 
 struct PP_PrintSettings_Dev {
   // This is the size of the printable area in points (1/72 of an inch)
   struct PP_Rect printable_area;
   int32_t dpi;
   PP_PrintOrientation_Dev orientation;
   PP_Bool grayscale;
   PP_PrintOutputFormat_Dev format;
 };
+PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_PrintSettings_Dev, 32);
 
 // Specifies a contiguous range of page numbers to be printed.
 // The page numbers use a zero-based index.
 struct PP_PrintPageNumberRange_Dev {
   uint32_t first_page_number;
   uint32_t last_page_number;
 };
+PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_PrintPageNumberRange_Dev, 8);
 
 // Interface for the plugin to implement printing.
 #define PPP_PRINTING_DEV_INTERFACE "PPP_Printing(Dev);0.2"
 
 struct PPP_Printing_Dev {
   // Returns array of supported print output formats. The array is allocated
   // using PPB_Core.MemAlloc. The caller is responsible for freeing the array
   // using PPB_Core.MemFree.
   // Sets |*format_count| to 0 returns NULL if printing is not supported at all.
   PP_PrintOutputFormat_Dev* (*QuerySupportedFormats)(PP_Instance instance,
@@ skipping 13 matching lines @@
   PP_Resource (*PrintPages)(
       PP_Instance instance,
       const struct PP_PrintPageNumberRange_Dev* page_ranges,
       uint32_t page_range_count);
 
   // Ends the print session. Further calls to PrintPage will fail.
   void (*End)(PP_Instance instance);
 };
 
 #endif  // PPAPI_C_DEV_PPP_PRINTING_DEV_H_