isolate.gypi: Only load build/util/version.gypi for Windows.

build/isolate.gypi

Index: build/isolate.gypi
diff --git a/build/isolate.gypi b/build/isolate.gypi
index fc82a15cbd939bb56b9b469bbde544c2110f5e2a..ea3a91bdee057db68e43e8e9dcdf9c148e792c3d 100644
--- a/build/isolate.gypi
+++ b/build/isolate.gypi
@@ -37,9 +37,6 @@
 # for more information.
 
 {
-  'includes': [
-    '../build/util/version.gypi',
-  ],
   'rules': [
     {
       'rule_name': 'isolate',
@@ -67,10 +64,6 @@
         '--path-variable', 'DEPTH', '<(DEPTH)',
         '--path-variable', 'PRODUCT_DIR', '<(PRODUCT_DIR) ',
 
-        # Extra variables are replaced on the 'command' entry and on paths in
-        # the .isolate file but are not considered relative paths.
-        '--extra-variable', 'version_full=<(version_full)',
-
         # Note: This list must match DefaultConfigVariables()
         # in build/android/pylib/utils/isolator.py
         '--config-variable', 'CONFIGURATION_NAME=<(CONFIGURATION_NAME)',
@@ -104,6 +97,8 @@
       ],
       'conditions': [
         # Note: When gyp merges lists, it appends them to the old value.
+        # Extra variables are replaced on the 'command' entry and on paths in
+        # the .isolate file but are not considered relative paths.
         ['OS=="mac"', {
           'action': [
             '--extra-variable', 'mac_product_name=<(mac_product_name)',
@@ -119,7 +114,9 @@
           ],
         }],
         ['OS=="win"', {
+          'includes': ['../build/util/version.gypi'],
           'action': [
+            '--extra-variable', 'version_full=<(version_full)',
             '--config-variable', 'msvs_version=<(MSVS_VERSION)',
           ],
         }, {