Fix wpt/html/coep/require-corp-about-{blank,srcdoc}.html

 - platform/mac-mac10.13/.../require-corp-about-blank-expected.txt
   is redundant - it's same as the base expectation.
 - platform/mac-mac10.14/.../require-corp-about-blank-expected.txt
   is wrong - the test always fails on the platform (and the failures
   are suppressed by TestExpectations).
 - wpt/html/coep/require-corp-about-blank.html always fails because
   COEP is only effective on secure contexts
   (whatwg/html#4930). Rename it to
   wpt/html/coep/require-corp-about-blank.https.html
 - wpt/html/coep/require-corp-about-srcdoc.html always fails because
   COEP is only effective on secure contexts
   (whatwg/html#4930). Rename it to
   wpt/html/coep/require-corp-about-srcdoc.https.html
 - Remove redundant TestExpectations entries.

Bug: 1086065, 626703
Change-Id: I5573dd4446f482acdde828404e0a88893897ce09
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2274133
Auto-Submit: Yutaka Hirano <yhirano@chromium.org>
Reviewed-by: Makoto Shimazu <shimazu@chromium.org>
Commit-Queue: Yutaka Hirano <yhirano@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#783875}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 34c0036a47c782ddd4528a37a25394f7acfd8939

blink/web_tests/TestExpectations

@@ -2731,12 +2731,6 @@ crbug.com/626703 [ Mac10.10 ] virtual/cache-storage-sequence/external/wpt/servic
 crbug.com/626703 [ Mac10.10 ] virtual/cache-storage-eager-reading/external/wpt/service-workers/service-worker/about-blank-replacement.https.html [ Timeout ]
 crbug.com/626703 [ Mac10.10 ] virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/fetch-response-taint.https.html [ Timeout ]
 crbug.com/626703 [ Mac10.10 ] virtual/cache-storage-eager-reading/external/wpt/service-workers/service-worker/service-worker-csp-script.https.html [ Timeout ]
-crbug.com/626703 [ Mac10.13 ] external/wpt/html/cross-origin-embedder-policy/require-corp-about-blank.html [ Failure Timeout ]
-crbug.com/626703 [ Mac10.14 ] external/wpt/html/cross-origin-embedder-policy/require-corp-about-blank.html [ Failure Timeout ]
-crbug.com/626703 [ Mac10.15 ] external/wpt/html/cross-origin-embedder-policy/require-corp-about-blank.html [ Failure Timeout ]
-crbug.com/626703 [ Retina ] external/wpt/html/cross-origin-embedder-policy/require-corp-about-blank.html [ Failure Timeout ]
-crbug.com/626703 [ Mac10.13 ] external/wpt/html/cross-origin-embedder-policy/require-corp-about-srcdoc.html [ Failure Timeout ]
-crbug.com/626703 [ Mac10.15 ] external/wpt/html/cross-origin-embedder-policy/require-corp-about-srcdoc.html [ Failure Timeout ]
 crbug.com/626703 [ Linux ] external/wpt/streams/idlharness.any.serviceworker.html [ Timeout ]
 crbug.com/626703 [ Mac ] external/wpt/streams/idlharness.any.serviceworker.html [ Timeout ]
 crbug.com/626703 [ Win ] external/wpt/streams/idlharness.any.serviceworker.html [ Timeout ]