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This refactoring CL makes it easier to change NTP designs. The key
variable to control this switch is configData.ntpDesignName, which was
added in
https://chromiumcodereview.appspot.com/447033002/

We also added titleTextAlign and titleTextFade properties. The support
for these fields in Most Visited <iframes> were are added in
https://chromiumcodereview.appspot.com/448793003/

BUG=400346
TBR=jhawkins

Review URL: https://codereview.chromium.org/447243003

Cr-Commit-Position: refs/heads/master@{#288269}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@288269 0039d316-1c4b-4281-b951-d872f2087c98