CalendarPicker display in correct format for minimum Value

Offset for minimum value, 0001/01/01 returns 0, resulting in setContentOffset not setting required values.

R=keishi1, tkent
BUG=348461

Review URL: https://codereview.chromium.org/195443002

git-svn-id: svn://svn.chromium.org/blink/trunk@169312 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Size checking logic is duplicated.

ImageData::create() already checks size validation.
BTW, createEmptyImageData() checks size validation again as same logic.

Review URL: https://codereview.chromium.org/190633011

git-svn-id: svn://svn.chromium.org/blink/trunk@169313 bbb929c8-8fbe-4397-9dbb-9b2b20218538