[mojo] Add typemap and variant support to generators

mojo/public/tools/bindings/generators/mojom_cpp_generator.py

 # Copyright 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 mojom.generate.generator as generator
 import mojom.generate.module as mojom
 import mojom.generate.pack as pack
 from mojom.generate.template_expander import UseJinja
@@ skipping 411 matching lines @@
     return {
       "module": self.module,
       "namespace": self.module.namespace,
       "namespaces_as_array": NamespaceToArray(self.module.namespace),
       "imports": self.module.imports,
       "kinds": self.module.kinds,
       "enums": self.module.enums,
       "structs": self.GetStructs(),
       "unions": self.GetUnions(),
       "interfaces": self.GetInterfaces(),
+      "variant": self.variant,
     }
 
   @UseJinja("cpp_templates/module.h.tmpl", filters=cpp_filters)
   def GenerateModuleHeader(self):
     return self.GetJinjaExports()
 
   @UseJinja("cpp_templates/module-internal.h.tmpl", filters=cpp_filters)
   def GenerateModuleInternalHeader(self):
     return self.GetJinjaExports()
 
   @UseJinja("cpp_templates/module.cc.tmpl", filters=cpp_filters)
   def GenerateModuleSource(self):
     return self.GetJinjaExports()
 
   def GenerateFiles(self, args):
+    suffix = "-%s" % self.variant if self.variant else ""
     self.Write(self.GenerateModuleHeader(),
-        self.MatchMojomFilePath("%s.h" % self.module.name))
+        self.MatchMojomFilePath("%s%s.h" % (self.module.name, suffix)))
     self.Write(self.GenerateModuleInternalHeader(),
-        self.MatchMojomFilePath("%s-internal.h" % self.module.name))
+        self.MatchMojomFilePath("%s%s-internal.h" % (self.module.name, suffix)))
     self.Write(self.GenerateModuleSource(),
-        self.MatchMojomFilePath("%s.cc" % self.module.name))
+        self.MatchMojomFilePath("%s%s.cc" % (self.module.name, suffix)))