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This is a subset of https://codereview.chromium.org/1313763002/.

The tests have to be removed in a separate patch to unblock the Chromium-side
patch: https://codereview.chromium.org/1314643002/.

BUG=524115

Review URL: https://codereview.chromium.org/1303233007

git-svn-id: svn://svn.chromium.org/blink/trunk@201270 bbb929c8-8fbe-4397-9dbb-9b2b20218538