3 files changed, 10 insertions, 4 deletions
diff --git a/chromium/tools/clang/pylib/clang/compile_db.py b/chromium/tools/clang/pylib/clang/compile_db.py
index 46220af8b90..50decf71907 100755
--- a/chromium/tools/clang/pylib/clang/compile_db.py
+++ b/chromium/tools/clang/pylib/clang/compile_db.py
@@ -67,7 +67,7 @@ def _ProcessEntry(entry):
     match = _RSP_RE.search(entry['command'])
     if match:
       rsp_path = os.path.join(entry['directory'], match.group(2))
-      rsp_contents = file(rsp_path).read()
+      rsp_contents = open(rsp_path).read()
       entry['command'] = ''.join([
           entry['command'][:match.start(1)],
           rsp_contents,
diff --git a/chromium/tools/clang/pylib/clang/compile_db_test.py b/chromium/tools/clang/pylib/clang/compile_db_test.py
index 493f2f815db..9ec818bbb5e 100755
--- a/chromium/tools/clang/pylib/clang/compile_db_test.py
+++ b/chromium/tools/clang/pylib/clang/compile_db_test.py
@@ -62,7 +62,11 @@ class CompileDbTest(unittest.TestCase):
         _TEST_COMPILE_DB)
 
     # Assert no changes were made.
-    self.assertItemsEqual(processed_compile_db, _TEST_COMPILE_DB)
+    try:
+      # assertItemsEqual is renamed assertCountEqual in Python3.
+      self.assertCountEqual(processed_compile_db, _TEST_COMPILE_DB)
+    except AttributeError:
+      self.assertItemsEqual(processed_compile_db, _TEST_COMPILE_DB)
 
   def testProcessForWindows(self):
     sys.platform = 'win32'
diff --git a/chromium/tools/clang/pylib/clang/plugin_testing.py b/chromium/tools/clang/pylib/clang/plugin_testing.py
index 7082ac87978..6b2e6067118 100755
--- a/chromium/tools/clang/pylib/clang/plugin_testing.py
+++ b/chromium/tools/clang/pylib/clang/plugin_testing.py
@@ -63,7 +63,7 @@ class ClangPluginTest(object):
       cmd = clang_cmd[:]
       try:
         # Some tests need to run with extra flags.
-        cmd.extend(file('%s.flags' % test_name).read().split())
+        cmd.extend(open('%s.flags' % test_name).read().split())
       except IOError:
         pass
       cmd.append(test)
@@ -85,7 +85,9 @@ class ClangPluginTest(object):
 
   def RunOneTest(self, test_name, cmd):
     try:
-      actual = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
+      actual = subprocess.check_output(cmd,
+                                       stderr=subprocess.STDOUT,
+                                       universal_newlines=True)
     except subprocess.CalledProcessError as e:
       # Some plugin tests intentionally trigger compile errors, so just ignore
       # an exit code that indicates failure.