Remove gender specific language from src/tools

tools/valgrind/chrome_tests.py

Index: tools/valgrind/chrome_tests.py
diff --git a/tools/valgrind/chrome_tests.py b/tools/valgrind/chrome_tests.py
index 75702275a3e65a42897e543d186f098a6e991d5e..a4e6c4df559d9cf9f33a18fac6bdcb44e7265f58 100755
--- a/tools/valgrind/chrome_tests.py
+++ b/tools/valgrind/chrome_tests.py
@@ -174,8 +174,9 @@ class ChromeTests:
   def _AppendGtestFilter(self, tool, name, cmd):
     '''Append an appropriate --gtest_filter flag to the googletest binary
        invocation.
-       If the user passed his own filter mentioning only one test, just use it.
-       Othewise, filter out tests listed in the appropriate gtest_exclude files.
+       If the user passed their own filter mentioning only one test, just use
+       it. Otherwise, filter out tests listed in the appropriate gtest_exclude
+       files.
     '''
     if (self._gtest_filter and
         ":" not in self._gtest_filter and