Revert "Make Array.prototype.pop throw if the last element is not configurable."

tools/presubmit.py

Index: tools/presubmit.py
diff --git a/tools/presubmit.py b/tools/presubmit.py
index 1ab63477745846c7f8926efa0106b06caadd1fd5..780dab9cf9e4c86e347dac5b382ab989268e6dc6 100755
--- a/tools/presubmit.py
+++ b/tools/presubmit.py
@@ -282,8 +282,8 @@ class SourceProcessor(SourceFileProcessor):
   Check that all files include a copyright notice and no trailing whitespaces.
   """
 
-  RELEVANT_EXTENSIONS = ['.js', '.cc', '.h', '.py', '.c',
-                         '.status', '.gyp', '.gypi']
+  RELEVANT_EXTENSIONS = ['.js', '.cc', '.h', '.py', '.c', 'SConscript',
+      'SConstruct', '.status', '.gyp', '.gypi']
 
   # Overwriting the one in the parent class.
   def FindFilesIn(self, path):
@@ -292,7 +292,7 @@ class SourceProcessor(SourceFileProcessor):
                                 stdout=PIPE, cwd=path, shell=True)
       result = []
       for file in output.stdout.read().split():
-        for dir_part in os.path.dirname(file).replace(os.sep, '/').split('/'):
+        for dir_part in os.path.dirname(file).split(os.sep):
           if self.IgnoreDir(dir_part):
             break
         else: