[Mac] Pref position cleanup...

[Mac] Pref position cleanup
- Baselines match between labels and top control for:
  - default browser (basics)
  - browsing data (personal stuff)
  - themes (personal stuff)
- The list for startup urls and the textbox for homepage are both indented to the start of the text on the radio they go with.
- The gap above the list for startup urls and the textbox for homepage and their radio buttons is the same.

BUG=26703
TEST=Baseline match, gap between radio and field/list is the same, field/list are left aligned

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=31020

[pink (ping after 24hrs), 2009-11-04 22:24:23]

rubberstamp LGTM