libvpx: Pull from upstream

source/libvpx/tools/diff.py

 #!/usr/bin/env python
 ##  Copyright (c) 2012 The WebM project authors. All Rights Reserved.
 ##
 ##  Use of this source code is governed by a BSD-style license
 ##  that can be found in the LICENSE file in the root of the source
 ##  tree. An additional intellectual property rights grant can be found
 ##  in the file PATENTS.  All contributing project authors may
 ##  be found in the AUTHORS file in the root of the source tree.
 ##
 """Classes for representing diff pieces."""
@@ skipping 38 matching lines @@
 
     def Append(self, line):
         """Adds a line to the DiffHunk and its DiffLines children."""
         if line[0] == "-":
             self.left.Append(line)
         elif line[0] == "+":
             self.right.Append(line)
         elif line[0] == " ":
             self.left.Append(line)
             self.right.Append(line)
+        elif line[0] == "\\":
+            # Ignore newline messages from git diff.
+            pass
         else:
             assert False, ("Unrecognized character at start of diff line "
                            "%r" % line[0])
         self.lines.append(line)
 
     def Complete(self):
         return self.left.Complete() and self.right.Complete()
 
     def __repr__(self):
         return "DiffHunk(%s, %s, len %d)" % (
@@ skipping 49 matching lines @@
             hunk.Append(line)
 
             # See if the whole hunk has been parsed. If so, yield it and prepare
             # for the next hunk.
             if hunk.Complete():
                 yield hunk
                 hunk = None
 
     # Partial hunks are a parse error
     assert hunk is None