Remove .isolated file rewriting.

scripts/slave/unittests/runisolatedtest_test.py

Index: scripts/slave/unittests/runisolatedtest_test.py
diff --git a/scripts/slave/unittests/runisolatedtest_test.py b/scripts/slave/unittests/runisolatedtest_test.py
index f12cb654aa5f7c36144aa527121a55466c3203da..cb6671315341e317ea7a93f515a1d170751eeb51 100755
--- a/scripts/slave/unittests/runisolatedtest_test.py
+++ b/scripts/slave/unittests/runisolatedtest_test.py
@@ -38,13 +38,13 @@ class TestAll(unittest.TestCase):
     data = {
       'version': '1.0',
       'command': [ '../testing/test_env.py',
-                   r'..\build\Release/browser_test.exe'],
-      'files': { r'build\Release\testdata': {} },
+                   r'..\out\Release/browser_test.exe'],
+      'files': { r'out\Release\testdata': {} },
 
       'variables' : {
         'EXECUTABLE_SUFFIX' : '.exe',
         'OS' : 'win',
-        'PRODUCT_DIR' : '../build/Release'
+        'PRODUCT_DIR' : '../out/Release'
       },
     }
     with open(isolated, 'w') as f: