cr: Add support for mac

tools/cr/cr/base/mac.py

Index: tools/cr/cr/base/mac.py
diff --git a/tools/cr/cr/base/linux.py b/tools/cr/cr/base/mac.py
similarity index 57%
copy from tools/cr/cr/base/linux.py
copy to tools/cr/cr/base/mac.py
index 407c48efe3fd52d48b6bedf8e019174bdaf03678..5bf22761dc33d0850f8b437399b28a27566e37c8 100644
--- a/tools/cr/cr/base/linux.py
+++ b/tools/cr/cr/base/mac.py
@@ -1,30 +1,30 @@
-# Copyright 2013 The Chromium Authors. All rights reserved.
+# Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-"""The linux specific host and platform implementation module."""
+"""The mac specific host and platform implementation module."""
 
 import os
 
 import cr
 
 
-class LinuxHost(cr.Host):
-  """The implementation of Host for linux."""
+class MacHost(cr.Host):
+  """The implementation of Host for mac."""
 
   ACTIVE = cr.Config.From(
       GOOGLE_CODE='/usr/local/google/code',
   )
 
   def __init__(self):
-    super(LinuxHost, self).__init__()
+    super(MacHost, self).__init__()
 
   def Matches(self):
-    return cr.Platform.System() == 'Linux'
+    return cr.Platform.System() == 'Darwin'
 
 
-class LinuxPlatform(cr.Platform):
-  """The implementation of Platform for the linux target."""
+class MacPlatform(cr.Platform):
+  """The implementation of Platform for the mac target."""
 
   ACTIVE = cr.Config.From(
       CR_BINARY=os.path.join('{CR_BUILD_DIR}', '{CR_BUILD_TARGET}'),
@@ -33,7 +33,7 @@ class LinuxPlatform(cr.Platform):
 
   @property
   def enabled(self):
-    return cr.Platform.System() == 'Linux'
+    return cr.Platform.System() == 'Darwin'
 
   @property
   def priority(self):