Generate ChromeVersionConstants.java at build time.

components/cronet.gypi

 # 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.
 
 {
   'conditions': [
     ['OS=="android" and use_icu_alternatives_on_android==1', {
       # TODO(mef): Figure out what needs to be done for gn script.
       'targets': [
         {
@@ skipping 58 matching lines @@
                 'version_py_path': '<(DEPTH)/build/util/version.py',
                 'version_path': '<(DEPTH)/chrome/VERSION',
                 'template_input_path': 'cronet/android/java/src/org/chromium/net/Version.template',
               },
               'inputs': [
                 '<(template_input_path)',
                 '<(version_path)',
                 '<(lastchange_path)',
               ],
               'outputs': [
-                '<(SHARED_INTERMEDIATE_DIR)/templates/org/chromium/cronet/Version.java',
+                '<(SHARED_INTERMEDIATE_DIR)/templates/<(_target_name)/org/chromium/cronet/Version.java',
               ],
               'action': [
                 'python',
                 '<(version_py_path)',
                 '-f', '<(version_path)',
                 '-f', '<(lastchange_path)',
                 '<(template_input_path)',
                 '<@(_outputs)',
               ],
               'message': 'Generating version information',
@@ skipping 384 matching lines @@
             'java_in_dir': 'cronet/android/test/javatests',
             'resource_dir': 'cronet/android/test/res',
             'is_test_apk': 1,
           },
           'includes': [ '../build/java_apk.gypi' ],
         },
       ],
     }],  # OS=="android"
   ],
 }