Section 3.2 of the C++ standard states that destructor definitions
implicitly "use" operator delete functions. Therefore, these operator
delete functions must be defined even if they are never called by
user code explicitly.
http://www.open-std.org/JTC1/SC22/WG21/docs/cwg_defects.html#261

gcc allows them to remain as empty definitions. However, not all
compilers allow this. (e.g. xlc on zOS)

This pull request creates definitions which if ever called, result
in an abort.

R=danno@chromium.org,jochen@chromium.org
BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2588433002
Cr-Commit-Position: refs/heads/master@{#41981}