Set correct class name for interfaces with disabled partials

Set correct class name for interfaces with disabled partials

If an runtime enabled interface was disabled, we'd initialize its
v8::FunctionTemplate's class name to the empty string. We'd also do this
if a runtime enabled *partial* interface was disabled, even though the
interface as a whole was enabled, which is clearly wrong.

As a simple fix, simply always set the interface's real name. If the
interface is disabled, it won't matter what it's set to anyway.

BUG=475830
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=194937

[Jens Widell, 2015-05-05 14:42:37]

jl@opera.com changed reviewers:
+ haraken@chromium.org

[Jens Widell, 2015-05-05 14:42:38]

PTAL

A slightly more proper fix might be to split
V8DOMConfiguration::installDOMClassTemplate() into two; one part that sets class
name and internal field count and such, called only by the main interface
install*Template(), and one that adds attributes, accessors and methods, called
by both the main interface and partial install*Template().

Let me know if you (agree and) think we should do that instead.

[haraken, 2015-05-05 16:02:41]

LGTM

> A slightly more proper fix might be to split
> V8DOMConfiguration::installDOMClassTemplate() into two; one part that sets
class
> name and internal field count and such, called only by the main interface
> install*Template(), and one that adds attributes, accessors and methods,
called
> by both the main interface and partial install*Template().
> 
> Let me know if you (agree and) think we should do that instead.

This makes sense, but if unconditionally setting the interface name doesn't
cause any issue (I don't think so), I think this CL would be enough.

[Jens Widell, 2015-05-05 16:44:28]

The CQ bit was checked by jl@opera.com

[commit-bot: I haz the power, 2015-05-05 16:45:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1126543010/1

[commit-bot: I haz the power, 2015-05-05 20:07:47]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=194937