Mojo: generated pointer 'getters' should return const pointers.

mojo/public/bindings/generators/mojom_cpp_generator.py

 # Copyright (c) 2013 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.
 
 """Generates C++ source files from a mojom.Module."""
 
 import datetime
 import mojom
 import mojom_pack
 import os
@@ skipping 66 matching lines @@
       "  payload_size += mojo::internal::ComputeSizeOf($NAME);")
   field_template = Template("  $TYPE ${FIELD}_;")
   bool_field_template = Template("  uint8_t ${FIELD}_ : 1;")
   setter_template = \
       Template("  void set_$FIELD($TYPE $FIELD) { ${FIELD}_ = $FIELD; }")
   ptr_setter_template = \
       Template("  void set_$FIELD($TYPE $FIELD) { ${FIELD}_.ptr = $FIELD; }")
   getter_template = \
       Template("  $TYPE $FIELD() const { return ${FIELD}_; }")
   ptr_getter_template = \
-      Template("  $TYPE $FIELD() const { return ${FIELD}_.ptr; }")
+      Template("  const $TYPE $FIELD() const { return ${FIELD}_.ptr; }")
   pad_template = Template("  uint8_t _pad${COUNT}_[$PAD];")
   templates  = {}
   HEADER_SIZE = 8
 
   kind_to_type = {
     mojom.BOOL:   "bool",
     mojom.INT8:   "int8_t",
     mojom.UINT8:  "uint8_t",
     mojom.INT16:  "int16_t",
     mojom.UINT16: "uint16_t",
@@ skipping 377 matching lines @@
       self.module.structs);
     self.WriteTemplateToFile("module_internal.h",
         HEADER_GUARD = self.GetHeaderGuard(self.module.name + "_INTERNAL"),
         HEADER = self.GetHeaderFile(self.module.name),
         TRAITS = '\n'.join(traits))
 
   def GenerateFiles(self):
     self.GenerateModuleHeader()
     self.GenerateModuleInternalHeader()
     self.GenerateModuleSource()