Views: Remove reduntant Button::ConfigureDefaultFocus calls.

This CL removes some reduntant calls to Button::ConfigureDefaultFocus(). These
calls are reduntant since LabelButton::SetStyle() already calls
Button::ConfigureDefaultFocus() and set_request_focus_on_press(true).

BUG=NONE

Review-Url: https://codereview.chromium.org/1977353002
Cr-Commit-Position: refs/heads/master@{#394057}
2 files changed