Remove failure suppressions for window.performance tests in OOPIF.

Bug: 608780
Change-Id: I4b699a8322702e117a0e2a5b81b61fd294e781b5
Reviewed-on: https://chromium-review.googlesource.com/889522Reviewed-by: Łukasz Anforowicz <lukasza@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#532543}

third_party/WebKit/LayoutTests/FlagExpectations/site-per-process

@@ -83,12 +83,6 @@ crbug.com/606594 http/tests/local/serviceworker/fetch-request-body-file.html [ S
 # https://crbug.com/607991 - MockWebClipboardImpl not replicated across OOPIFs.
 crbug.com/607991 http/tests/misc/copy-resolves-urls.html [ Failure ]
 
-# https://crbug.com/608780 - window.performance doesn't work with OOPIFs
-crbug.com/608780 http/tests/w3c/webperf/submission/Intel/resource-timing/test_resource_timing_cross_origin_redirect.html [ Failure ]
-crbug.com/608780 http/tests/w3c/webperf/submission/Intel/resource-timing/test_resource_timing_cross_origin_redirect_with_timing_allow_origin.html [ Failure ]
-crbug.com/608780 http/tests/w3c/webperf/submission/Intel/resource-timing/test_resource_timing_cross_origin_resource_request.html [ Failure ]
-crbug.com/608780 http/tests/w3c/webperf/submission/Intel/resource-timing/test_resource_timing_timing_allow_cross_origin_resource_request.html [ Failure ]
-
 # https://crbug.com/611232 - CSP checks from remote parent frame do not properly report violations
 crbug.com/611232 http/tests/security/contentSecurityPolicy/frame-src-child-frame-navigates-to-blocked-origin.html [ Timeout ]