Add focusing state flag to ce.Surface when programatically focusing

Such a focus should not trigger the content offset fix-up logic.

Bug: 64041
Change-Id: Iecc5e7f69cc74c4693efc6e95d2d89f22c289021
Remove unnecessary overflow:hidden from block slug style

Works around a browser bug in Chrome which results in the bullet
being hidden (https://code.google.com/p/chromium/issues/detail?id=365024).

Bug: 64117
Change-Id: Ia48011d9562f05dac4ffe7d7b434b068492aa0d0
Merge "Add focusing state flag to ce.Surface when programatically focusing"
Merge "Remove unnecessary overflow:hidden from block slug style"