[Chromium] Unreviewed, fix Linux image expectations for two SVG tests.
[Chromium] Unreviewed, fix Linux image expectations for two SVG tests.

* platform/chromium-linux/svg/W3C-I18N/tspan-dirNone-ubOverride-in-default-context-expected.png:
* platform/chromium-linux/svg/W3C-I18N/tspan-dirNone-ubOverride-in-ltr-context-expected.png:

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@105141 bbb929c8-8fbe-4397-9dbb-9b2b20218538
axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk