Add back -Wover-align

Android's Clang now correctly handles the default alignment for
new/malloc.  The flag is still set in BUILD.gn since outside of an
Android tree, we don't have control over the Clang used to build Skia.

Bug: skia:
Change-Id: Ifc71c033c18232a3b0d2faed6f1ecb7eee8b364e
Reviewed-on: https://skia-review.googlesource.com/c/163647
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
2 files changed