Refactor the devserver to make it easier to control caching

chrome/common/extensions/docs/server2/example_zipper_test.py

Index: chrome/common/extensions/docs/server2/example_zipper_test.py
diff --git a/chrome/common/extensions/docs/server2/example_zipper_test.py b/chrome/common/extensions/docs/server2/example_zipper_test.py
index f1a5185d190aad2f064972dcc894623a1b29988b..25819b4dc9620ef3b7b4e6c27e375b4a0be47b2c 100755
--- a/chrome/common/extensions/docs/server2/example_zipper_test.py
+++ b/chrome/common/extensions/docs/server2/example_zipper_test.py
@@ -9,19 +9,16 @@ import unittest
 
 from compiled_file_system import CompiledFileSystem
 from example_zipper import ExampleZipper
-from in_memory_object_store import InMemoryObjectStore
 from local_file_system import LocalFileSystem
-from memcache_file_system import MemcacheFileSystem
+from caching_file_system import CachingFileSystem
 
 class ExampleZipperTest(unittest.TestCase):
   def setUp(self):
-    object_store = InMemoryObjectStore('')
-    self._file_system = MemcacheFileSystem(
-        LocalFileSystem(os.path.join(sys.path[0], 'test_data')),
-        object_store)
+    self._file_system = CachingFileSystem(
+        LocalFileSystem(os.path.join(sys.path[0], 'test_data')))
     self._example_zipper = ExampleZipper(
         self._file_system,
-        CompiledFileSystem.Factory(self._file_system, object_store),
+        CompiledFileSystem.Factory(self._file_system),
         'example_zipper')
 
   def testCreateZip(self):