Generate and use LASTCHANGE for blink

webkit/common/user_agent/webkit_user_agent.gypi

 # Copyright 2012 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.
 
 {
   'targets': [
     {
       'target_name': 'user_agent',
       'type': '<(component)',
       'defines': [
@@ skipping 32 matching lines @@
     ['OS != "ios"', {
       'targets': [
         {
           'target_name': 'webkit_version',
           'type': 'none',
           'actions': [
             {
               'action_name': 'webkit_version',
               'inputs': [
                 '<(script)',
-                '../../../build/util/lastchange.py',  # Used by the script.
-                # This depends on the svn revision of third_party/WebKit but does
-                # not list it as a dependency.  Incremental builds will have
-                # the wrong WEBKIT_SVN_REVISION.
+                '<(lastchange)',
+                '<(template)',
               ],
               'outputs': [
                 '<(SHARED_INTERMEDIATE_DIR)/webkit_version.h',
               ],
-              'action': ['python', '<(script)', '../../../third_party/WebKit/Source',
-                         '<(SHARED_INTERMEDIATE_DIR)'],
+              'action': ['python',
+                         '<(script)',
+                         '-f', '<(lastchange)',
+                         '<(template)',
+                         '<@(_outputs)',
+                       ],
               'variables': {
-                'script': '../build/webkit_version.py',
+                'script': '<(DEPTH)/chrome/tools/build/version.py',
+                'lastchange': '<(DEPTH)/build/util/LASTCHANGE.blink',
+                'template': '<(DEPTH)/webkit/build/webkit_version.h.in',
               },
             },
           ],
           'direct_dependent_settings': {
             'include_dirs': [
               '<(SHARED_INTERMEDIATE_DIR)',
             ],
           },
           # Dependents may rely on files generated by this target or one of its
           # own hard dependencies.
           'hard_dependency': 1,
         },
       ],
     }],
   ],
 }