Add webkitpy platform support for Mac 10.10 Yosemite.

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

Index: Tools/Scripts/webkitpy/common/system/platforminfo_unittest.py
diff --git a/Tools/Scripts/webkitpy/common/system/platforminfo_unittest.py b/Tools/Scripts/webkitpy/common/system/platforminfo_unittest.py
index c16a16cf2997fded73e454e3c9fccc7ad29c70ca..c892f25826fec3a55d3d92902e232dd4224b0ba0 100644
--- a/Tools/Scripts/webkitpy/common/system/platforminfo_unittest.py
+++ b/Tools/Scripts/webkitpy/common/system/platforminfo_unittest.py
@@ -134,7 +134,8 @@ class TestPlatformInfo(unittest.TestCase):
         self.assertEqual(self.make_info(fake_sys('darwin'), fake_platform('10.7.1')).os_version, 'lion')
         self.assertEqual(self.make_info(fake_sys('darwin'), fake_platform('10.8.1')).os_version, 'mountainlion')
         self.assertEqual(self.make_info(fake_sys('darwin'), fake_platform('10.9.0')).os_version, 'mavericks')
-        self.assertEqual(self.make_info(fake_sys('darwin'), fake_platform('10.10.0')).os_version, 'future')
+        self.assertEqual(self.make_info(fake_sys('darwin'), fake_platform('10.10.0')).os_version, 'yosemite')
+        self.assertEqual(self.make_info(fake_sys('darwin'), fake_platform('10.11.0')).os_version, 'future')

[ojan, 2015/06/18 16:27:33]

I don't think you should fix it in this patch...but FYI I don't think we need
"future" anymore. That was just there to support Apple's development cycle where
they wanted a name for internal OS releases that hadn't been named yet.

Dirk, am I correct here?

[Dirk Pranke, 2015/06/18 17:23:03]

Correct, We don't need to keep this around.

 
         self.assertEqual(self.make_info(fake_sys('linux2')).os_version, 'lucid')