Make a metaprogramming hack more C++11-compatible

Make a metaprogramming hack more C++11-compatible

Some classes have private "operator delete"s, which causes their
destructors to be deleted in C++11. Clang's r178563 implemented
this rule better, and as a result using these classes with memory
instrumentation causes a compile error. To unblock the clang roll,
give the metaprogramming helper class an explicit nondeleted
destructor. (This is just a workaround, not a permanent fix, see bug.)

See also http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20130415/078311.html

BUG=233473
TEST=Stuff still builds in C++11 mode after the next clang roll.
TBR=yurys

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=148704

[Nico, 2013-04-18 22:50:02]

r?

[Nico, 2013-04-18 23:11:01]

yurys: Since you reviewed https://bugs.webkit.org/show_bug.cgi?id=105026 can you
review this too if nobody beats you to it?

[Nico, 2013-04-19 04:40:57]

I'll TBR this, as it's a build fix.

[Nico, 2013-04-19 04:41:21]

Committed patchset #2 manually as r148704 (presubmit successful).

[yurys, 2013-04-19 08:44:18]

I guess adding explicit ~Base() destructor without implementation should fix
problem on Windows.

[yurys, 2013-04-19 09:30:20]

On 2013/04/19 08:44:18, Yury Semikhatsky wrote:
> I guess adding explicit ~Base() destructor without implementation should fix
> problem on Windows.

Created a patch wit such fix: https://codereview.chromium.org/14241017/