Add module annotation to specify the name of the java class for constants.

mojo/public/tools/bindings/generators/mojom_java_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 java source files from a mojom.Module."""
 
 import argparse
 import os
 import re
 
@@ skipping 60 matching lines @@
       isinstance(element, mojom.Field)):
     return CamelCase(element.name)
   if isinstance(element,  mojom.EnumValue):
     return (UpperCamelCase(element.enum_name) + '.' +
             ConstantStyle(element.name))
   if (isinstance(element, mojom.NamedValue) or
       isinstance(element, mojom.Constant)):
     return ConstantStyle(element.name)
   raise Exception("Unexpected element: " % element)
 
+def ParseStringAttribute(attribute):
+  if isinstance(attribute, basestring):
+    return attribute
+  assert attribute[0] == 'EXPRESSION'
+  assert len(attribute[1]) == 1
+  return attribute[1][0][1:-1].encode('string_escape')
+
 def GetPackage(module):
   if 'JavaPackage' in module.attributes:
-    package = module.attributes['JavaPackage']
-    if isinstance(package, basestring):
-      return package
-    assert package[0] == 'EXPRESSION'
-    assert len(package[1]) == 1
-    return package[1][0][1:-1].encode('string_escape')
+    return ParseStringAttribute(module.attributes['JavaPackage'])
   # Default package.
   return "org.chromium.mojom." + module.namespace
 
 def GetNameForKind(kind):
   def _GetNameHierachy(kind):
     hierachy = []
     if kind.parent_kind:
       hierachy = _GetNameHierachy(kind.parent_kind)
     hierachy.append(kind.name)
     return hierachy
@@ skipping 29 matching lines @@
     return token + 'L'
   return token
 
 def ExpressionToText(value, module):
   if value[0] != "EXPRESSION":
     raise Exception("Expected EXPRESSION, got" + value)
   return "".join(generator.ExpressionMapper(value,
       lambda token: TranslateConstants(token, module)))
 
 def GetConstantsMainEntityName(module):
+  if 'JavaConstantsClassName' in module.attributes:
+    return ParseStringAttribute(module.attributes['JavaConstantsClassName'])
   # This constructs the name of the embedding classes for module level constants
   # by extracting the mojom's filename and prepending it to Constants.
   return (UpperCamelCase(module.path.split('/')[-1].rsplit('.', 1)[0]) +
           'Constants')
 
 class Generator(generator.Generator):
 
   java_filters = {
     "expression_to_text": ExpressionToText,
     "java_type": GetJavaType,
@@ skipping 21 matching lines @@
     args = parser.parse_args(unparsed_args)
     if self.output_dir and args.java_output_directory:
       self.output_dir = os.path.join(args.java_output_directory,
                                      GetPackage(self.module).replace('.', '/'))
       if not os.path.exists(self.output_dir):
         os.makedirs(self.output_dir)
 
     if self.module.constants:
       self.Write(self.GenerateConstantsSource(self.module),
                  "%s.java" % GetConstantsMainEntityName(self.module))