[v8] Check for availablity of the media engine

[v8] Check for availablity of the media engine

BUG=22837
Check for availablity of media engine so typeof(HTMLMediaElement) 
and friends can return undefined when media engine is not available.

[Alpha Left Google, 2009-10-13 22:53:29]

submitting this for review just for sake of record.

[Alpha Left Google, 2009-10-13 22:59:29]

the double diff is because i'm submitting this change from git and manually add
the webkit files.. :( ignore that this patch applies cleanly.

[scherkus (not reviewing), 2009-10-14 00:09:19]

LGTM

[Alpha Left Google, 2009-10-15 23:30:25]

Please take a look again taking comments from atwilson.

[scherkus (not reviewing), 2009-10-15 23:54:52]

http://codereview.chromium.org/276011/diff/4001/5001
File third_party/WebKit/WebCore/bindings/v8/custom/V8CustomBinding.h (right):

http://codereview.chromium.org/276011/diff/4001/5001#newcode260
Line 260: DECLARE_ACCESSOR_RUNTIME_ENABLER(DOMWindowMediaError);
might also have to do runtime enabling of TimeRanges

[Alpha Left Google, 2009-10-16 00:22:07]

typeof(TimeRanges) should nothing for me..

[Alpha Left Google, 2009-10-16 00:26:27]

I mean it gives me "undefined" even in normal case.

[scherkus (not reviewing), 2009-10-16 00:38:17]

LGTM
Was just wondering because of
http://www.whatwg.org/specs/web-apps/current-work/#timeranges

On Thu, Oct 15, 2009 at 5:26 PM, <hclam@chromium.org> wrote:

> I mean it gives me "undefined" even in normal case.
>
>
> http://codereview.chromium.org/276011
>