Remove the 'http_lock' and 'file_lock' code from webkitpy.

Tools/Scripts/webkitpy/common/system/systemhost_mock.py

     # 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
@@ skipping 11 matching lines @@
     # 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.
 
 from webkitpy.common.system.environment import Environment
 from webkitpy.common.system.executive_mock import MockExecutive
 from webkitpy.common.system.filesystem_mock import MockFileSystem
-from webkitpy.common.system.file_lock_mock import MockFileLock
 from webkitpy.common.system.platforminfo_mock import MockPlatformInfo
 from webkitpy.common.system.user_mock import MockUser
 from webkitpy.common.system.workspace_mock import MockWorkspace
 
 
 class MockSystemHost(object):
     def __init__(self, log_executive=False, executive_throws_when_run=None, os_name=None, os_version=None, executive=None, filesystem=None):
         self.executive = executive or MockExecutive(should_log=log_executive, should_throw_when_run=executive_throws_when_run)
         self.filesystem = filesystem or MockFileSystem()
         self.user = MockUser()
         self.platform = MockPlatformInfo()
         if os_name:
             self.platform.os_name = os_name
         if os_version:
             self.platform.os_version = os_version
 
         # FIXME: Should this take pointers to the filesystem and the executive?
         self.workspace = MockWorkspace()
 
     def copy_current_environment(self):
         return Environment({"MOCK_ENVIRON_COPY": '1'})
-
-    def make_file_lock(self, path):
-        return MockFileLock(path)