Gender-neutralize a few more comments / strings.

chrome/browser/shell_integration_linux.cc

Index: chrome/browser/shell_integration_linux.cc
diff --git a/chrome/browser/shell_integration_linux.cc b/chrome/browser/shell_integration_linux.cc
index d6f5c6509ba51f44fad080910e06eefa6e75a63f..555b2d21010d462039d5cf75749a0b5820cdffd4 100644
--- a/chrome/browser/shell_integration_linux.cc
+++ b/chrome/browser/shell_integration_linux.cc
@@ -334,7 +334,7 @@ bool CreateShortcutOnDesktop(const base::FilePath& shortcut_filename,
     // Delete the file. No shortuct is better than corrupted one. Use unlinkat
     // to make sure we're deleting the file in the directory we think we are.
     // Even if an attacker manager to put something other at
-    // |shortcut_filename| we'll just undo his action.
+    // |shortcut_filename| we'll just undo their action.
     unlinkat(desktop_fd, shortcut_filename.value().c_str(), 0);
   }