[Password Manager] Enable the Password Export feature on Desktop

Bug: 790990,789561
Change-Id: I89dae77899c27ea166ed75c038a82fe0a1278b9a
Reviewed-on: https://chromium-review.googlesource.com/893378Reviewed-by: Vaclav Brozek <vabr@chromium.org>
Commit-Queue: Christos Froussios <cfroussios@chromium.org>
Cr-Commit-Position: refs/heads/master@{#533249}

components/password_manager/core/common/password_manager_features.cc

@@ -66,8 +66,13 @@ const base::Feature kProtectSyncCredentialOnReauth = {
     "ProtectSyncCredentialOnReauth", base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Controls the ability to export passwords from Chrome's settings page.
+#if defined(OS_ANDROID) || defined(OS_IOS)
 const base::Feature kPasswordExport = {"PasswordExport",
                                        base::FEATURE_DISABLED_BY_DEFAULT};
+#else
+const base::Feature kPasswordExport = {"PasswordExport",
+                                       base::FEATURE_ENABLED_BY_DEFAULT};
+#endif
 
 // Controls the ability to import passwords from Chrome's settings page.
 const base::Feature kPasswordImport = {"PasswordImport",