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

ppapi/c/dev/ppb_url_util_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_PPB_URL_UTIL_DEV_H_
 #define PPAPI_C_DEV_PPB_URL_UTIL_DEV_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_stdint.h"
@@ skipping 14 matching lines @@
 // integral part of the path.
 //
 // If the component is not present at all, begin will be 0 and len will be -1.
 // If the component is present but empty, the length will be 0 instead. Example:
 //   http://foo/search    -> query = (0, -1)
 //   http://foo/search?   -> query = (18, 0)
 struct PP_UrlComponent_Dev {
   int32_t begin;
   int32_t len;
 };
+PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_UrlComponent_Dev, 8);
 
 struct PP_UrlComponents_Dev {
   struct PP_UrlComponent_Dev scheme;
   struct PP_UrlComponent_Dev username;
   struct PP_UrlComponent_Dev password;
   struct PP_UrlComponent_Dev host;
   struct PP_UrlComponent_Dev port;
   struct PP_UrlComponent_Dev path;
   struct PP_UrlComponent_Dev query;
   struct PP_UrlComponent_Dev ref;
 };
+PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_UrlComponents_Dev, 64);
 
 // URL encoding: URLs are supplied to this interface as NULL-terminated 8-bit
 // strings. You can pass non-ASCII characters which will be interpreted as
 // UTF-8. Canonicalized URL strings returned by these functions will be ASCII
 // except for the reference fragment (stuff after the '#') which will be
 // encoded as UTF-8.
 struct PPB_UrlUtil_Dev {
   // Canonicalizes the given URL string according to the rules of the host
   // browser. If the URL is invalid or the var is not a string, this will
   // return a Null var and the components structure will be unchanged.
@@ skipping 46 matching lines @@
 
   // Checks whether the document containing the |active| plugin instance can
   // access the document containing the |target| plugin instance according to
   // the security policy of the browser. This includes the same origin policy
   // and any cross-origin capabilities enabled by the document. If either of
   // the plugin instances are invalid, returns PP_FALSE.
   PP_Bool (*DocumentCanAccessDocument)(PP_Instance active, PP_Instance target);
 };
 
 #endif  // PPAPI_C_DEV_PPB_URL_UTIL_DEV_H_