Add tests for isolated worlds. Currently, isolated worlds only works in V8, but these tests should help us bring up the feature in JSC.
Created attachment 32836 [details] patch
Assigned for landing. This is blocked on a downstream patch to enable this feature.
M LayoutTests/ChangeLog A LayoutTests/http/tests/security/isolatedWorld/all-window-properties-expected.txt A LayoutTests/http/tests/security/isolatedWorld/all-window-properties.html A LayoutTests/http/tests/security/isolatedWorld/all-window-prototypes-expected.txt A LayoutTests/http/tests/security/isolatedWorld/all-window-prototypes.html A LayoutTests/http/tests/security/isolatedWorld/body-properties-expected.txt A LayoutTests/http/tests/security/isolatedWorld/body-properties.html A LayoutTests/http/tests/security/isolatedWorld/body-prototype-expected.txt A LayoutTests/http/tests/security/isolatedWorld/body-prototype.html A LayoutTests/http/tests/security/isolatedWorld/document-properties-expected.txt A LayoutTests/http/tests/security/isolatedWorld/document-properties.html A LayoutTests/http/tests/security/isolatedWorld/document-prototype-expected.txt A LayoutTests/http/tests/security/isolatedWorld/document-prototype.html A LayoutTests/http/tests/security/isolatedWorld/global-variables-expected.txt A LayoutTests/http/tests/security/isolatedWorld/global-variables.html A LayoutTests/http/tests/security/isolatedWorld/image-properties-expected.txt A LayoutTests/http/tests/security/isolatedWorld/image-properties.html A LayoutTests/http/tests/security/isolatedWorld/image-prototype-expected.txt A LayoutTests/http/tests/security/isolatedWorld/image-prototype.html A LayoutTests/http/tests/security/isolatedWorld/location-properties-expected.txt A LayoutTests/http/tests/security/isolatedWorld/location-properties.html A LayoutTests/http/tests/security/isolatedWorld/location-prototype-expected.txt A LayoutTests/http/tests/security/isolatedWorld/location-prototype.html A LayoutTests/http/tests/security/isolatedWorld/number-prototype-expected.txt A LayoutTests/http/tests/security/isolatedWorld/number-prototype.html A LayoutTests/http/tests/security/isolatedWorld/object-prototype-expected.txt A LayoutTests/http/tests/security/isolatedWorld/object-prototype.html A LayoutTests/http/tests/security/isolatedWorld/string-prototype-expected.txt A LayoutTests/http/tests/security/isolatedWorld/string-prototype.html A LayoutTests/http/tests/security/isolatedWorld/window-properties-expected.txt A LayoutTests/http/tests/security/isolatedWorld/window-properties.html M LayoutTests/platform/gtk/Skipped M LayoutTests/platform/mac/Skipped M LayoutTests/platform/qt/Skipped M LayoutTests/platform/win/Skipped Committed r45983