Add suggestion to use "no-cors" with Fetch fails CORS check.

LayoutTests/http/tests/inspector/console-fetch-logging-expected.txt

Index: LayoutTests/http/tests/inspector/console-fetch-logging-expected.txt
diff --git a/LayoutTests/http/tests/inspector/console-fetch-logging-expected.txt b/LayoutTests/http/tests/inspector/console-fetch-logging-expected.txt
index 2216430e66170226de492a81185cf52521b03863..d08dc8e2ddbd56c5847c51b28917a2be9d639368 100644
--- a/LayoutTests/http/tests/inspector/console-fetch-logging-expected.txt
+++ b/LayoutTests/http/tests/inspector/console-fetch-logging-expected.txt
@@ -2,12 +2,12 @@ CONSOLE MESSAGE: line 9: sending a GET request to resources/xhr-exists.html
 CONSOLE MESSAGE: line 9: sending a GET request to resources/xhr-does-not-exist.html
 CONSOLE MESSAGE: line 9: sending a POST request to resources/post-target.cgi
 CONSOLE MESSAGE: line 9: sending a GET request to http://localhost:8000/inspector/resources/xhr-exists.html
-CONSOLE ERROR: Fetch API cannot load http://localhost:8000/inspector/resources/xhr-exists.html. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://127.0.0.1:8000' is therefore not allowed access.
+CONSOLE ERROR: Fetch API cannot load http://localhost:8000/inspector/resources/xhr-exists.html. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://127.0.0.1:8000' is therefore not allowed access. Alternatively, if you want an opaque response, switch to The Fetch API in 'no-cors' mode.
 CONSOLE MESSAGE: line 9: sending a GET request to resources/xhr-exists.html
 CONSOLE MESSAGE: line 9: sending a GET request to resources/xhr-does-not-exist.html
 CONSOLE MESSAGE: line 9: sending a POST request to resources/post-target.cgi
 CONSOLE MESSAGE: line 9: sending a GET request to http://localhost:8000/inspector/resources/xhr-exists.html
-CONSOLE ERROR: Fetch API cannot load http://localhost:8000/inspector/resources/xhr-exists.html. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://127.0.0.1:8000' is therefore not allowed access.
+CONSOLE ERROR: Fetch API cannot load http://localhost:8000/inspector/resources/xhr-exists.html. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://127.0.0.1:8000' is therefore not allowed access. Alternatively, if you want an opaque response, switch to The Fetch API in 'no-cors' mode.
 Tests that fetch logging works when XMLHttpRequest Logging is Enabled and doesn't show logs when it is Disabled.
 
 console-fetch-logging.html:4 sending a GET request to resources/xhr-exists.html
@@ -18,11 +18,11 @@ network-test.js:48 Fetch complete: GET "http://127.0.0.1:8000/inspector/resource
 console-fetch-logging.html:4 sending a POST request to resources/post-target.cgi
 network-test.js:48 Fetch complete: POST "http://127.0.0.1:8000/inspector/resources/post-target.cgi".makeFetch @ network-test.js:48requestHelper @ console-fetch-logging.html:11step3 @ console-fetch-logging.html:33
 console-fetch-logging.html:4 sending a GET request to http://localhost:8000/inspector/resources/xhr-exists.html
-console-fetch-logging.html:1 Fetch API cannot load http://localhost:8000/inspector/resources/xhr-exists.html. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://127.0.0.1:8000' is therefore not allowed access.
+console-fetch-logging.html:1 Fetch API cannot load http://localhost:8000/inspector/resources/xhr-exists.html. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://127.0.0.1:8000' is therefore not allowed access. Alternatively, if you want an opaque response, switch to The Fetch API in 'no-cors' mode.
 console-fetch-logging.html:4 sending a GET request to resources/xhr-exists.html
 console-fetch-logging.html:4 sending a GET request to resources/xhr-does-not-exist.html
 network-test.js:48 GET http://127.0.0.1:8000/inspector/resources/xhr-does-not-exist.html 404 (Not Found)makeFetch @ network-test.js:48requestHelper @ console-fetch-logging.html:11step2 @ console-fetch-logging.html:27
 console-fetch-logging.html:4 sending a POST request to resources/post-target.cgi
 console-fetch-logging.html:4 sending a GET request to http://localhost:8000/inspector/resources/xhr-exists.html
-console-fetch-logging.html:1 Fetch API cannot load http://localhost:8000/inspector/resources/xhr-exists.html. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://127.0.0.1:8000' is therefore not allowed access.
+console-fetch-logging.html:1 Fetch API cannot load http://localhost:8000/inspector/resources/xhr-exists.html. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://127.0.0.1:8000' is therefore not allowed access. Alternatively, if you want an opaque response, switch to The Fetch API in 'no-cors' mode.