Run format-webkit on webkitpy code (without string conversion).

third_party/WebKit/Tools/Scripts/webkitpy/common/system/filesystem.py

Index: third_party/WebKit/Tools/Scripts/webkitpy/common/system/filesystem.py
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/common/system/filesystem.py b/third_party/WebKit/Tools/Scripts/webkitpy/common/system/filesystem.py
index d00bef71619bc61602d714572779c9541cdfd21b..cc40de02ca040a77535cb97507a18d36b3411e59 100644
--- a/third_party/WebKit/Tools/Scripts/webkitpy/common/system/filesystem.py
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/common/system/filesystem.py
@@ -41,6 +41,7 @@ import time
 
 
 class FileSystem(object):
+
     """FileSystem interface for webkitpy.
 
     Unless otherwise noted, all paths are allowed to be either absolute
@@ -172,7 +173,7 @@ class FileSystem(object):
         """Create the specified directory if it doesn't already exist."""
         try:
             os.makedirs(self.join(*path))
-        except OSError, e:
+        except OSError as e:
             if e.errno != errno.EEXIST:
                 raise
 
@@ -235,6 +236,7 @@ class FileSystem(object):
         return os.path.relpath(path, start)
 
     class _WindowsError(exceptions.OSError):
+
         """Fake exception for Linux and Mac."""
         pass
 
@@ -254,7 +256,7 @@ class FileSystem(object):
             try:
                 osremove(path)
                 return True
-            except exceptions.WindowsError, e:
+            except exceptions.WindowsError as e:
                 time.sleep(sleep_interval)
                 retry_timeout_sec -= sleep_interval
                 if retry_timeout_sec < 0: