Forward bundle product_type to the compile_xcassets tool.

tools/gn/substitution_type.h

 // Copyright 2014 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 TOOLS_GN_SUBSTITUTION_TYPE_H_
 #define TOOLS_GN_SUBSTITUTION_TYPE_H_
 
 #include <vector>
 
 class Err;
@@ skipping 51 matching lines @@
 
   // Valid for alink only.
   SUBSTITUTION_ARFLAGS,  // {{arflags}}
 
   // Valid for bundle_data targets.
   SUBSTITUTION_BUNDLE_ROOT_DIR,  // {{bundle_root_dir}}
   SUBSTITUTION_BUNDLE_RESOURCES_DIR,  // {{bundle_resources_dir}}
   SUBSTITUTION_BUNDLE_EXECUTABLE_DIR,  // {{bundle_executable_dir}}
   SUBSTITUTION_BUNDLE_PLUGINS_DIR,  // {{bundle_plugins_dir}}
 
+  // Valid for compile_xcassets tool.
+  SUBSTITUTION_BUNDLE_PRODUCT_TYPE,  // {{bundle_product_type}}
+
   // Used only for the args of actions.
   SUBSTITUTION_RSP_FILE_NAME,  // {{response_file_name}}
 
   SUBSTITUTION_NUM_TYPES  // Must be last.
 };
 
 // An array of size SUBSTITUTION_NUM_TYPES that lists the names of the
 // substitution patterns, including the curly braces. So, for example,
 // kSubstitutionNames[SUBSTITUTION_SOURCE] == "{{source}}".
 extern const char* kSubstitutionNames[SUBSTITUTION_NUM_TYPES];
@@ skipping 43 matching lines @@
 bool IsValidCompileXCassetsSubstitution(SubstitutionType type);
 
 // Like the "IsValid..." version above but checks a list of types and sets a
 // an error blaming the given source if the test fails.
 bool EnsureValidSourcesSubstitutions(
     const std::vector<SubstitutionType>& types,
     const ParseNode* origin,
     Err* err);
 
 #endif  // TOOLS_GN_SUBSTITUTION_TYPE_H_