IDL compiler: Consolidate test IDL files

IDL compiler: Consolidate test IDL files

To facilitate reviewing, we want to minimize the number of test IDL files.
This consolidates IDL files in a few ways, removing 7 of 30 files:

* Consolidate most interface extended attributes into TestInterfacePython.idl
* Some interface extended attributes overlap;
  the overlapping ones are put into TestInterfacePython2.idl
* Interface extended attributes that also have content (that affect
  attributes and methods) are put in separate files, to keep these effects
  clear and separate -- this is currently just 2:
TestInterfaceCheckSecurity.idl
TestInterfaceDoNotCheckConstants.idl

I'll use this format for future interface extended attributes, meaning:
TestInterfacePython.idl if possible, others if necessary (as above).

Also:
* Delete TestSerializedScriptValueInterface.idl, as that's covered in
  TestObjectPython.idl (nothing interface-specific).
* Merge TestConstants.idl into TestObjectPython.idl.

It also renames for consistency:
Test*Interface.idl => TestInterface*.idl
(better collation).

Once I'm finished with the rewrite, I'll go through the test cases again
and see if we can consolidate or eliminate further.

NOTRY=true

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=163135

[Nils Barth (inactive), 2013-12-03 08:47:11]

CL consolidating 7/30 (23%) of test cases!

[haraken, 2013-12-03 09:09:46]

LGTM!

[Nils Barth (inactive), 2013-12-03 09:12:19]

On 2013/12/03 09:09:46, haraken wrote:
> LGTM!

Thanks!
I'm going to wait until the [CustomToV8] CL lands, then incorporate it, as that
has another one,
so this'll be 31 => 23 (8/31 ~= 26%!).

[commit-bot: I haz the power, 2013-12-04 01:55:58]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/nbarth@chromium.org/101403002/20001

[commit-bot: I haz the power, 2013-12-04 01:56:49]

Change committed as 163135