Revert 57635: Implement about:labs

Revert 57635: Implement about:labs

Original CL: http://codereview.chromium.org/3152055

Implement about:labs

Tabpose is currently the only lab on mac, tabs-on-left the only lab on windows. Nothing for linux yet.

BUG=53399
TEST=Go to about:labs. Should have one feature on windows and osx each, none on linux yet. about:labs should not be visible on the stable channel. Labs that were enabled on the dev channel should not be enabled on the stable channel. about:labs in chromeos should still work (they use a different implementation)
TBR=thakis@chromium.org

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=57664

[Nico, 2010-08-27 13:18:42]

LG

The reason for the breakage is that I "protected"
`PluginsUI::RegisterUserPrefs(user_prefs);` with `if
(about_labs::IsEnabled())` instead of
`LabsUI::RegisterUserPrefs(user_prefs);` as I intended. Fixed &
relanded.

On Fri, Aug 27, 2010 at 4:45 AM,  <dpolukhin@chromium.org> wrote:
> Reviewers: viettrungluu, arv, Nico,
>
> Description:
> Revert 57635: Implement about:labs
>
> Original CL: http://codereview.chromium.org/3152055
>
> Implement about:labs
>
> Tabpose is currently the only lab on mac, tabs-on-left the only lab on
> windows.
> Nothing for linux yet.
>
> BUG=53399
> TEST=Go to about:labs. Should have one feature on windows and osx each, none
> on
> linux yet. about:labs should not be visible on the stable channel. Labs that
> were enabled on the dev channel should not be enabled on the stable channel.
> about:labs in chromeos should still work (they use a different
> implementation)
> TBR=thakis@chromium.org
>
> Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=57664
>
> Please review this at http://codereview.chromium.org/3256001/show
>
> SVN Base: http://src.chromium.org/git/chromium.git
>
> Affected files:
>  M chrome/app/generated_resources.grd
>  M chrome/app/theme/theme_resources.grd
>  M chrome/browser/app_controller_mac.mm
>  M chrome/browser/browser_about_handler.cc
>  M chrome/browser/browser_main.cc
>  M chrome/browser/browser_resources.grd
>  M chrome/browser/dom_ui/dom_ui_factory.cc
>  D chrome/browser/dom_ui/labs_ui.h
>  D chrome/browser/dom_ui/labs_ui.cc
>  M chrome/browser/dom_ui/plugins_ui.cc
>  D chrome/browser/labs.h
>  D chrome/browser/labs.cc
>  M chrome/browser/prefs/browser_prefs.cc
>  D chrome/browser/resources/labs.html
>  M chrome/chrome_browser.gypi
>  M chrome/common/pref_names.h
>  M chrome/common/pref_names.cc
>  M chrome/common/url_constants.h
>  M chrome/common/url_constants.cc
>
>
>