Add webkitpy platform support for Mac 10.10 Yosemite.

Tools/Scripts/webkitpy/tool/commands/rebaseline_unittest.py

Index: Tools/Scripts/webkitpy/tool/commands/rebaseline_unittest.py
diff --git a/Tools/Scripts/webkitpy/tool/commands/rebaseline_unittest.py b/Tools/Scripts/webkitpy/tool/commands/rebaseline_unittest.py
index d7a60ee685569b43a3176cb0e81fdc6ed6b3ca70..8fedbd0f8ae7955ebb4ee2d61d051cc4ce55734b 100644
--- a/Tools/Scripts/webkitpy/tool/commands/rebaseline_unittest.py
+++ b/Tools/Scripts/webkitpy/tool/commands/rebaseline_unittest.py
@@ -450,7 +450,7 @@ class TestRebaselineJsonUpdatesExpectationsFiles(_BaseTestCase):
         self.command._rebaseline(options,  {"userscripts/first-test.html": {"WebKit Mac10.7": ["txt", "png"]}})
 
         new_expectations = self._read(self.lion_expectations_path)
-        self.assertMultiLineEqual(new_expectations, "Bug(x) [ Mavericks MountainLion Retina SnowLeopard ] userscripts/first-test.html [ ImageOnlyFailure ]\nbug(z) [ Linux ] userscripts/first-test.html [ ImageOnlyFailure ]\n")
+        self.assertMultiLineEqual(new_expectations, "Bug(x) [ Mavericks MountainLion Retina SnowLeopard Yosemite ] userscripts/first-test.html [ ImageOnlyFailure ]\nbug(z) [ Linux ] userscripts/first-test.html [ ImageOnlyFailure ]\n")
 
     def test_rebaseline_updates_expectations_file_all_platforms(self):
         options = MockOptions(optimize=False, verbose=True, results_directory=None)
@@ -462,7 +462,7 @@ class TestRebaselineJsonUpdatesExpectationsFiles(_BaseTestCase):
         self.command._rebaseline(options,  {"userscripts/first-test.html": {"WebKit Mac10.7": ["txt", "png"]}})
 
         new_expectations = self._read(self.lion_expectations_path)
-        self.assertMultiLineEqual(new_expectations, "Bug(x) [ Android Linux Mavericks MountainLion Retina SnowLeopard Win ] userscripts/first-test.html [ ImageOnlyFailure ]\n")
+        self.assertMultiLineEqual(new_expectations, "Bug(x) [ Android Linux Mavericks MountainLion Retina SnowLeopard Win Yosemite ] userscripts/first-test.html [ ImageOnlyFailure ]\n")
 
     def test_rebaseline_handles_platform_skips(self):
         # This test is just like test_rebaseline_updates_expectations_file_all_platforms(),
@@ -478,7 +478,7 @@ class TestRebaselineJsonUpdatesExpectationsFiles(_BaseTestCase):
         self.command._rebaseline(options,  {"userscripts/first-test.html": {"WebKit Mac10.7": ["txt", "png"]}})
 
         new_expectations = self._read(self.lion_expectations_path)
-        self.assertMultiLineEqual(new_expectations, "Bug(x) [ Linux Mavericks MountainLion Retina SnowLeopard Win ] userscripts/first-test.html [ ImageOnlyFailure ]\n")
+        self.assertMultiLineEqual(new_expectations, "Bug(x) [ Linux Mavericks MountainLion Retina SnowLeopard Win Yosemite ] userscripts/first-test.html [ ImageOnlyFailure ]\n")
 
     def test_rebaseline_handles_skips_in_file(self):
         # This test is like test_Rebaseline_handles_platform_skips, except that the
@@ -497,8 +497,9 @@ class TestRebaselineJsonUpdatesExpectationsFiles(_BaseTestCase):
         self.command._rebaseline(options,  {"userscripts/first-test.html": {"WebKit Mac10.7": ["txt", "png"]}})
 
         new_expectations = self._read(self.lion_expectations_path)
-        self.assertMultiLineEqual(new_expectations,
-            ("Bug(x) [ Linux Mavericks MountainLion Retina SnowLeopard Win ] userscripts/first-test.html [ ImageOnlyFailure ]\n"
+        self.assertMultiLineEqual(
+            new_expectations,
+            ("Bug(x) [ Linux Mavericks MountainLion Retina SnowLeopard Win Yosemite ] userscripts/first-test.html [ ImageOnlyFailure ]\n"
              "Bug(y) [ Android ] userscripts/first-test.html [ Skip ]\n"))
 
     def test_rebaseline_handles_smoke_tests(self):
@@ -516,7 +517,7 @@ class TestRebaselineJsonUpdatesExpectationsFiles(_BaseTestCase):
         self.command._rebaseline(options,  {"userscripts/first-test.html": {"WebKit Mac10.7": ["txt", "png"]}})
 
         new_expectations = self._read(self.lion_expectations_path)
-        self.assertMultiLineEqual(new_expectations, "Bug(x) [ Linux Mavericks MountainLion Retina SnowLeopard Win ] userscripts/first-test.html [ ImageOnlyFailure ]\n")
+        self.assertMultiLineEqual(new_expectations, "Bug(x) [ Linux Mavericks MountainLion Retina SnowLeopard Win Yosemite ] userscripts/first-test.html [ ImageOnlyFailure ]\n")
 
 
 class TestRebaseline(_BaseTestCase):