tree abfeee47a2944a0ec9bd5219bb4345261e711ce8
parent a3e0807fdd7a1fde37d73add8c1581136f58c104
author Brett Wilson <brettw@chromium.org> 1558546349 -0700
committer Commit Bot <commit-bot@chromium.org> 1560793677 +0000

Update to more uses of C++11.

Adds move constructors to some fundamental types such as SourceFile,
SourceDir, and Label.

Removes most uses of swap and custom swap definitions in favor of move
semantics.

Converts most default class member initialization to declare default
values in the definition.

Moves more to using implicit and defaulted-in-the-header constructors
and destructors. The previous style was inherited from Chrome which had
those rules out of concern for code size. But for this small project the
header-based ones are a little easier to follow.

Change-Id: I7d5c3bd4ac9863c34b1072fdefef81e59e555a7f
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/5080
Commit-Queue: Brett Wilson <brettw@google.com>
Reviewed-by: Scott Graham <scottmg@chromium.org>