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diff --git a/Tools/Scripts/webkitpy/common/system/urlfetcher.py b/Tools/Scripts/webkitpy/common/system/urlfetcher.py
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+# Copyright (C) 2011 Google Inc. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Wrapper module for fetching URLs."""
+
+import urllib
+
+
+class UrlFetcher(object):
+    """Class with restricted interface to fetch URLs (makes testing easier)"""
+    def __init__(self, filesystem):
+        self._filesystem = filesystem
+
+    def fetch(self, url):
+        """Fetches the contents of the URL as a string."""
+        file_object = urllib.urlopen(url)
+        content = file_object.read()
+        file_object.close()
+        return content
+
+    def fetch_into_file(self, url):
+        """Fetches the contents of the URL into a temporary file and return the filename.
+
+        This is the equivalent of urllib.retrieve() except that we don't return any headers.
+        """
+        file_object, filename = self._filesystem.open_binary_tempfile('-fetched')
+        contents = self.fetch(url)
+        file_object.write(contents)
+        file_object.close()
+        return filename