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The navigation transition needs to apply some styles during the transition, so we need to expose this call to java.

Design doc: https://docs.google.com/a/chromium.org/document/d/17jg1RRL3RI969cLwbKBIcoGDsPwqaEdBxafGNYGwiY4/edit# 
Implementation details: https://docs.google.com/a/chromium.org/document/d/1kREPtFJaeLoDKwrfmrYTD7DHCdxX1RzFBga2gNY8lyE/edit#heading=h.bng2kpmyvxq5
BUG=370696

Review URL: https://codereview.chromium.org/375073002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282504 0039d316-1c4b-4281-b951-d872f2087c98