Precompile mojom bindings generator jinja templates.

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 470 matching lines @@
       "imports": self.module.imports,
       "kinds": self.module.kinds,
       "enums": self.module.enums,
       "structs": self.GetStructs(),
       "unions": self.GetUnions(),
       "interfaces": self.GetInterfaces(),
       "variant": self.variant,
       "extra_headers": self.GetExtraHeaders(),
     }
 
-  @UseJinja("cpp_templates/module.h.tmpl", filters=cpp_filters)
+  @staticmethod
+  def GetTemplatePrefix():
+    return "cpp_templates"
+
+  @classmethod
+  def GetFilters(cls):
+    return cls.cpp_filters
+
+  @UseJinja("module.h.tmpl")
   def GenerateModuleHeader(self):
     return self.GetJinjaExports()
 
-  @UseJinja("cpp_templates/module-internal.h.tmpl", filters=cpp_filters)
+  @UseJinja("module-internal.h.tmpl")
   def GenerateModuleInternalHeader(self):
     return self.GetJinjaExports()
 
-  @UseJinja("cpp_templates/module.cc.tmpl", filters=cpp_filters)
+  @UseJinja("module.cc.tmpl")
   def GenerateModuleSource(self):
     return self.GetJinjaExports()
 
   def GenerateFiles(self, args):
     global _current_typemap
     _current_typemap = self.typemap
     suffix = "-%s" % self.variant if self.variant else ""
     self.Write(self.GenerateModuleHeader(),
         self.MatchMojomFilePath("%s%s.h" % (self.module.name, suffix)))
     self.Write(self.GenerateModuleInternalHeader(),
         self.MatchMojomFilePath("%s%s-internal.h" % (self.module.name, suffix)))
     self.Write(self.GenerateModuleSource(),
         self.MatchMojomFilePath("%s%s.cc" % (self.module.name, suffix)))