NTP: Fix the size of the most visited settings button so that the image is not cut off.
NTP: Fix the size of the most visited settings button so that the image is not cut off.

BUG=54864
TEST=Open NTP and look at the wrench icon of the most visited section.

Review URL: http://codereview.chromium.org/3362014

git-svn-id: http://src.chromium.org/svn/trunk/src@58954 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: df3ebe249dc8f9bf5260a40bb4847cdd1a2085b2
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser