Add idbdatabase_createObjectStore10-1000ends.htm to SlowTests

Looks like it passes, it just needs a little extra time. Imported from
web-platform-tests so addressing the slowness may take a while to
improve the test.

BUG=521857
TBR=ojan@chromium.org

Review URL: https://codereview.chromium.org/1299223005 .

git-svn-id: svn://svn.chromium.org/blink/trunk@200929 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/LayoutTests/SlowTests

@@ -217,3 +217,5 @@ crbug.com/459009 crypto/subtle/ [ Slow ]
 
 crbug.com/24182 [ Debug ] animations/interpolation/transform-interpolation.html [ Slow ]
 crbug.com/24182 [ Debug ] animations/interpolation/webkit-transform-interpolation.html [ Slow ]
+
+crbug.com/521857 [ Win Debug ] imported/web-platform-tests/IndexedDB/idbdatabase_createObjectStore10-1000ends.htm [ Slow ]

third_party/WebKit/LayoutTests/TestExpectations

@@ -55,7 +55,6 @@ crbug.com/521862 [ Linux Win ] storage/websql/read-transactions-running-concurre
 crbug.com/521861 [ Debug ] media/track/tracklist-is-reachable-no-crash.html [ Crash Pass ]
 crbug.com/521859 http/tests/navigatorconnect/postmessage-from-worker.html [ Pass Timeout ]
 crbug.com/521858 [ Win7 ] http/tests/security/media-element-audio-source-node-same-origin.html [ Failure Pass ]
-crbug.com/521857 [ Win7 ] imported/web-platform-tests/IndexedDB/idbdatabase_createObjectStore10-1000ends.htm [ Pass Timeout ]
 crbug.com/521856 [ Mac Win ] svg/custom/resource-client-removal.svg [ Failure Pass ]
 crbug.com/521855 transitions/cancel-and-start-new.html [ Failure Pass ]
 crbug.com/521853 [ Win ] http/tests/inspector/search/sources-search-scope.html [ Failure Pass ]