Extend isolated-code-cache=[Slow] to the not-site-per-process suite.

Bug: 907402, 902685
Change-Id: Ifa530668be9f322a2ae5d92692298c20f98da828
Reviewed-on: https://chromium-review.googlesource.com/c/1347089Reviewed-by: Alex Moshchuk <alexmos@chromium.org>
Commit-Queue: Łukasz Anforowicz <lukasza@chromium.org>
Cr-Commit-Position: refs/heads/master@{#610156}

third_party/WebKit/LayoutTests/SlowTests

@@ -94,6 +94,8 @@ crbug.com/902685 http/tests/devtools/isolated-code-cache/same-origin-test.js [ S
 crbug.com/902685 http/tests/devtools/isolated-code-cache/cross-origin-test.js [ Slow ]
 crbug.com/902685 virtual/site-isolated-code-cache/http/tests/devtools/isolated-code-cache/same-origin-test.js [ Slow ]
 crbug.com/902685 virtual/site-isolated-code-cache/http/tests/devtools/isolated-code-cache/cross-origin-test.js [ Slow ]
+crbug.com/902685 virtual/not-site-per-process/http/tests/devtools/isolated-code-cache/same-origin-test.js [ Slow ]
+crbug.com/902685 virtual/not-site-per-process/http/tests/devtools/isolated-code-cache/cross-origin-test.js [ Slow ]
 
 # Misc DevTools tests that are slow
 crbug.com/246190 [ Release ] http/tests/devtools/indexeddb/ [ Slow ]

third_party/WebKit/LayoutTests/TestExpectations

@@ -161,7 +161,6 @@ crbug.com/872952 http/tests/media/autoplay/document-user-activation-feature-poli
 crbug.com/895001 external/wpt/html/user-activation/message-event-activation-api-iframe-cross-origin.sub.tentative.html [ Timeout Pass ]
 crbug.com/901502 http/tests/devtools/oopif/oopif-storage.js [ Pass Failure ]
 crbug.com/906879 http/tests/inspector-protocol/network/navigation-blocking-xorigin-iframe.js [ Pass Failure ]
-crbug.com/907402 virtual/not-site-per-process/http/tests/devtools/isolated-code-cache/same-origin-test.js [ Pass Timeout ]
 # ====== Site Isolation failures until here ======
 
 # ====== Oilpan-only failures from here ======