The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1ca5643f742618f334b63db2fb3cd7219943d585

commit 1ca5643f742618f334b63db2fb3cd7219943d585
Author: sunjian <sunjian@chromium.org>
Date: Thu Feb 09 20:15:19 2017

Remove duplicate layout tests for nav timing 2.
Wpt tests on github have been successfully imported into chromium. We can safely get rid of the temporary tests we had in w3c/webperf/approved directory.

BUG= 689750 

Review-Url: https://codereview.chromium.org/2681733003
Cr-Commit-Position: refs/heads/master@{#449386}

[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_idlharness-expected.txt
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_idlharness.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_attributes_exist.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_attributes_values.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_document_open.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_instance_accessors.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_navigate_within_document.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_navigation_type_backforward.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_navigation_type_navigate.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_navigation_type_reload.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_open_blank_page.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_open_data_uri.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_redirect_none.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_redirect_server.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_redirect_xserver.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_redirect_xserver_opt_in.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_unique_nav_instances.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_unloadEvents_no_previous_document.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_unloadEvents_previous_document_cross_origin.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_unloadEvents_with_cross_origin_redirects.html
[delete] https://crrev.com/199a4cfd241a92a1b79b8049031e95f6bd7c6488/third_party/WebKit/LayoutTests/http/tests/w3c/webperf/approved/navigation-timing/html/nav2_test_unloadEvents_with_previous_document.html