[Chromecast] Fixes for "Force Python 3 to be used in build."

Some targets only exercised by Chromecast internal builds were broken by
the following change:

https://chromium-review.googlesource.com/c/chromium/src/+/2515787

Bug: 1169966
Tets: Cast internal CQ

Change-Id: I39957eb7f2b7d813b1f00a03598155e9c729c3f3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2643698
Commit-Queue: Sean Topping <seantopping@chromium.org>
Auto-Submit: Sean Topping <seantopping@chromium.org>
Reviewed-by: Daniel Nicoara <dnicoara@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#846433}

chromecast/app/verify_cast_locales.py

@@ -5,6 +5,8 @@
 
 """Ensures that Chromecast developers are notified of locale changes."""
 
+from __future__ import print_function
+
 import argparse
 import sys
 
@@ -45,13 +47,13 @@ def main():
   removed_locales = set(CAST_LOCALES) - set(args.locales)
   added_locales = set(args.locales) - set(CAST_LOCALES)
 
-  print 'CAST_LOCALES no longer matches the locales list from GN!'
+  print('CAST_LOCALES no longer matches the locales list from GN!')
   if removed_locales:
-    print 'These locales have been removed: {}'.format(list(removed_locales))
+    print('These locales have been removed: {}'.format(list(removed_locales)))
   if added_locales:
-    print 'These locales have been added: {}'.format(list(added_locales))
-  print ('Please update CAST_LOCALES in {file} and add a reviewer from '
-         '//chromecast/OWNERS to your CL. ').format(file=__file__)
+    print('These locales have been added: {}'.format(list(added_locales)))
+  print(('Please update CAST_LOCALES in {file} and add a reviewer from '
+         '//chromecast/OWNERS to your CL. ').format(file=__file__))
   return FAILURE_RETURN_CODE
 
 

components/exo/wayland/fuzzer/wayland_templater.py

@@ -65,7 +65,7 @@ def ClangFormat(source, filename):
   clang_format_cmd = [GetClangFormatPath(), '--assume-filename=' + filename]
   proc = subprocess.Popen(
       clang_format_cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
-  stdout_output, stderr_output = proc.communicate(input=source)
+  stdout_output, stderr_output = proc.communicate(input=source.encode('utf8'))
   retcode = proc.wait()
   if retcode != 0:
       raise CalledProcessError(retcode, 'clang-format error: ' + stderr_output)
@@ -82,7 +82,7 @@ def WriteIfChanged(contents, filename):
     with open(filename) as in_fi:
       if in_fi.read() == contents:
         return
-  with open(filename, 'w') as out_fi:
+  with open(filename, 'wb') as out_fi:
     out_fi.write(contents)