Place all new baseline files in the most specific platform directory....

webkit/tools/layout_tests/test_types/simplified_text_diff.py

Index: webkit/tools/layout_tests/test_types/simplified_text_diff.py
===================================================================
--- webkit/tools/layout_tests/test_types/simplified_text_diff.py	(revision 5432)
+++ webkit/tools/layout_tests/test_types/simplified_text_diff.py	(working copy)
@@ -83,7 +83,7 @@
 
     return text
 
-  def CompareOutput(self, filename, proc, output, unused_test_args):
+  def CompareOutput(self, filename, proc, output, test_args):
     """Implementation of CompareOutput that removes most numbers before
     computing the diff.
 
@@ -92,6 +92,10 @@
     """
     failures = []
 
+    # If we're generating a new baseline, we pass.
+    if test_args.new_baseline:
+      return failures
+
     # Normalize text to diff
     output = self.GetNormalizedOutputText(output)
     # The full text diff already gave the result file if requested, so we'll