Use underscores to separate words in filenames in webkitpy.

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

 # Copyright (C) 2012 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 10 matching lines @@
 # 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.
 
 import unittest
 
-from webkitpy.common.system.platforminfo_mock import MockPlatformInfo
-from webkitpy.common.system.systemhost_mock import MockSystemHost
+from webkitpy.common.system.platform_info_mock import MockPlatformInfo
+from webkitpy.common.system.system_host_mock import MockSystemHost
 
 from .profiler import ProfilerFactory, GooglePProf
 
 
 class ProfilerFactoryTest(unittest.TestCase):
 
     def _assert_default_profiler_name(self, os_name, expected_profiler_name):
         profiler_name = ProfilerFactory.default_profiler_name(MockPlatformInfo(os_name))
         self.assertEqual(profiler_name, expected_profiler_name)
 
@@ skipping 53 matching lines @@
       42   1.1%   7.6%       47   1.2% WTF::Vector::shrinkCapacity
       35   0.9%   8.5%       35   0.9% WTF::RefPtr::get (inline)
       33   0.9%   9.4%       43   1.1% append (inline)
       29   0.8%  10.1%       67   1.8% WTF::StringImpl::deref (inline)
       29   0.8%  10.9%      100   2.7% add (inline)
       28   0.7%  11.6%       28   0.7% WebCore::QualifiedName::localName (inline)
 """
         host = MockSystemHost()
         profiler = GooglePProf(host, '/bin/executable', '/tmp/output')
         self.assertEqual(profiler._first_ten_lines_of_profile(pprof_output), expected_first_ten_lines)