Revert recent changes to base::Value

Revert recent changes to base::Value

Reverts:
98223: base: Add AsList() function to Value API.
98266: base: Add AsBinary() function to Value API.

There are two issues with these commits:
1. libcros uses base::Value to pass data to Chrome. It includes values.h from libchrome which contains its own copy. This is a terrible design flaw in libcros and is being addressed (http://crosbug.com/19576), however we need some time to address this before we can make these changes without breaking Chrome on ChromeOS.

2. AsList() and AsBinary() should be const. The fact that they were not const caused re-factoring that changed const Value& input arguments to Value*, which is against the spec. When we re-introduce this, these members should be made const.


BUG=chromium-os:19604
TEST=Check bots + ChromeOS autotests

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=98378

[stevenjb, 2011-08-26 00:24:10]

Unfortunately, unless we revert these there is no quick way to fix chromeos. The
libcros fix is at the top of my priority list, but will probably take a couple
of days to complete.

[stevenjb, 2011-08-26 00:32:22]

TBR: tony@chromium.org

Will push once some of the bots complete so we can get this in tonight's build.