C bindings: Implement _Validate(), and some pre-requisites

mojom/generators/c/cgen/header.go

 // Copyright 2016 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.
 
 package cgen
 
 import (
         "fmt"
         "log"
         "path/filepath"
@@ skipping 429 matching lines @@
         }
 }
 
 func getPaddingAfter(fields []mojom_types.StructField, i int, fileGraph *mojom_files.MojomFileGraph) uint32 {
         // Must be a power of 2 for the remaining computation to work
         const kAlignment uint32 = 8
 
         // Calculate the remaining padding for the last field
         if i == len(fields)-1 {
                 // m = (field offset + field size) % kAlignment
-                m := (fields[i].Offset + mojomTypeSize(fields[i].Type, fileGraph)) & (kAlignment - 1)
+                m := (fields[i].Offset + mojomTypeByteSize(fields[i].Type, fileGraph)) & (kAlignment - 1)
                 if m != 0 {
                         return kAlignment - m
                 }
                 return 0
         }
 
         // (next element's offset)
         //  - (current element's offset + current element's size)
-        diff := int64(fields[i+1].Offset) - (int64(fields[i].Offset) + int64(mojomTypeSize(fields[i].Type, fileGraph)))
+        diff := int64(fields[i+1].Offset) - (int64(fields[i].Offset) + int64(mojomTypeByteSize(fields[i].Type, fileGraph)))
         if diff <= 0 {
                 return 0
         }
         return uint32(diff)
 }