First step in l10n for the prefs window....

First step in l10n for the prefs window.
- Add a toolbar instead of tabs.
- Make the window change size based on the content.
- Center the views to the widest of the subviews.

TEST=prefs window and all of the controls in it work.
BUG=20538
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=28244

[TVL, 2009-10-06 21:24:01]

Pink -
  This works, doesn't do any nice animations, etc. yet.  But given what it does
to the xib, i want to land it and then work on the pretty stuff when I won't
collide with other folks.

[pink (ping after 24hrs), 2009-10-06 21:30:21]

lgtm with comments. I didn't bother looking at the xib.

http://codereview.chromium.org/242162/diff/1/3
File chrome/browser/cocoa/preferences_window_controller.mm (right):

http://codereview.chromium.org/242162/diff/1/3#newcode179
Line 179: // Ensure the "basics" is selected.
add a TODO here to record the selected view when closing and restore to that.
The hardcoding to basics is a bug that I keep meaning to go back and re-visit.

http://codereview.chromium.org/242162/diff/1/3#newcode198
Line 198: - (NSArray *)toolbarSelectableItemIdentifiers:(NSToolbar *)toolbar {
chrome style is NSArray*, not NSArray *

http://codereview.chromium.org/242162/diff/1/3#newcode825
Line 825: - (void)displayPreferenceView:(NSView*)prefsView {
function-level comment?

http://codereview.chromium.org/242162/diff/1/3#newcode829
Line 829: // Remove the previous view
period at end of sentence (all comments in this method).