Invoke LeakSanitizer on teardown of RendererAccessibilityTest

Invoke LeakSanitizer on teardown of RendererAccessibilityTest

Call LeakSanitizer before RenderViewTest::TearDown(), as the latter may
leak WebKit objects when it shuts down V8.

BUG=328552, 498407
Committed: https://crrev.com/afad64194903cd855acecbeb28c538d615b2571d
Cr-Commit-Position: refs/heads/master@{#333746}

[Sami, 2015-06-10 16:03:12]

skyostil@chromium.org changed reviewers:
+ dtseng@chromium.org

[Sami, 2015-06-10 16:03:37]

PTAL. See https://code.google.com/p/chromium/issues/detail?id=328552#c14 for
some more background.

[dmazzoni, 2015-06-10 16:09:43]

dmazzoni@chromium.org changed reviewers:
+ dmazzoni@chromium.org

[dmazzoni, 2015-06-10 16:09:43]

The CQ bit was checked by dmazzoni@chromium.org

[dmazzoni, 2015-06-10 16:09:43]

lgtm

[commit-bot: I haz the power, 2015-06-10 16:10:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1175013002/1

[commit-bot: I haz the power, 2015-06-10 16:45:12]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-10 16:46:26]

Patchset 1 (id:??) landed as
https://crrev.com/afad64194903cd855acecbeb28c538d615b2571d
Cr-Commit-Position: refs/heads/master@{#333746}